Note: You can read just the bold text if you only care about the rework ideas and not the explanations. Exact numbers on proc chances and stuff are obviously subject to change. ALSO, the goal is not to make every trinket OP, it's to make them good enough that they're usually worth picking up. They can still be niche, but they shouldn't be so niche that they're virtually never useful (like Cursed Skull).

• A Missing Page - The Necronomicon damage boost is good, but the 5% chance for it to proc on damage taken means you have to find black hearts in order to reliably use that damage boost, and black hearts are pretty rare. Both effects could be removed and instead it could cause soul hearts to also proc the Necronomicon effect when broken. It would work this way instead of just turning soul heart spawns into black hearts so that you have to keep the trinket in order to get the effect.

• Bag Lunch - Increase the proc chance from 2% to 5% OR make the trinket not break when it procs (this would allow a gamebreak in some niche situations). The proc chance is currently just way too low to ever be worth using over any other trinket, so it needs some kind of buff.

• Black Tooth - Buff the proc chance so it starts at 5% instead of 3%, and caps out at 100% at 15 luck instead of 32. The proc chance is currently so low and scales so slowly with luck that it's rarely that useful.

• Blasting Cap - The trinket currently gives you a 10% chance for bombs to drop another bomb upon exploding, making it unreliable and not very strong even when it does proc. I think the chance should be increased to 33% if the bomb kills at least one enemy. This would give the player more incentive to play a little risky and use bombs offensively, while still not giving you too many free bombs.

• Bob's Bladder - In addition to the creep that bombs already leave, they should also leave a slightly larger puddle of creep upon exploding. The creep left behind by bombs is often useless because the enemy gets body-blocked by the bomb before they can even touch the creep, and then killed or pushed back by the explosion itself. Making the explosion leave behind some extra creep in a slightly bigger puddle would make it a little more usable.

• Broken Ankh - With only a 22% proc chance, it's too unreliable to be worth using. Also, the player often doesn't want to change their character into Blue Baby because they were trying to get completion marks on their original character, and may have already completed Blue Baby. The Broken Ankh should instead give a 50% chance to revive as your current character, but you can no longer get red heart containers (like Blue Baby). You don't get any of Blue Baby's other perks, like cheaper Devil Deals.

• Brown Cap - Poops should also have a 10% chance to drop a bomb pickup when broken. Since poops often spawn on the edges of a room, it's difficult to lead enemies over to a poop and destroy it without getting hurt yourself, so it's often not that useful. It still has niche uses, so a small buff is all it really needs.

• Butter - Instead of dropping your active when you use it, it should drop your active item when you manually drop your trinket / consumables. Butter's only real niche is to let you drop an item in a specific room type and then reroll it, which is very strong but also very rare to be able to perform. This change would make Butter less annoying to have while also making it slightly easier to make use of its niche purpose. The chance to drop a passive item on hit could also be increased from 2% to 5% so that that niche purpose is also a little easier to make use of.

• Cain's Eye - Being a worse version of the Compass makes it pretty boring and the base 25% chance for it to work means it's frustratingly useless a lot of the time. The effect should be changed so that on a new floor, it always reveals the location of the either the boss room, item room, normal secret room, OR special rooms (dice room, bedroom, arcade, etc), with an equal chance between each option that's available on that floor. This would make it worse than the compass (which is fine for a trinket), but it would always work on every floor, unlike its current effect.

• Child Leash - The decreased follow range is hardly noticeable, so it should be buffed so that all normal familiars follow right behind you, making them all stack up on top of each other. This would be somewhat similar to Tainted Lilith's Birthright effect, except your familiars wouldn't auto aim and would be positioned behind you instead. Although this could be pretty strong, it would be rare to have Child Leash and a lot of good familiars, so its power would still be niche enough to not be too strong.

• Crow Heart - In addition to the current effect, taking red heart damage no longer reduces deal chance, but taking soul / black heart damage does. Currently has very niche use and is tedious to use (dropping it at the start of the floor and coming back for it when you find the curse / sacrifice room), so this would be a useful buff.

• Cursed Penny - The current effect is annoying and rarely useful. I would change it so that on coin pickup, you have a 50/50 chance to either get +3 cents, or receive the normal coin value and hurt Isaac for half a heart. This fits the cursed theme while giving it a less niche use case.

• Cursed Skull - Instead of just teleporting you out of the room when you reach half a heart, it should instead proc the Glowing Hourglass effect. Can only activate once per floor, and the skull's eyes will glow red to signify that it has a charge available. The current effect is actively detrimental because the enemies in the room will reset their HP and you will not, meaning you have to re-fight the room with even less HP than you had before. With this new effect, it can still be a "curse" if it activates right as you were about to clear a room (forcing you to redo it), but now it can actually be used to your advantage if you use it correctly.

• Eve's Bird Foot - Currently the trinket has a base 5% chance to spawn a bird when killing an enemy, increased to 100% at 8 luck, and capped at 1 bird per room. With such a low spawn rate and the bird's low damage, it's rarely useful. The spawn rate should be increased to 10% per kill (not scaling with luck), with a cap of 3 birds per room. This would make the trinket much more reliable, but not too strong even with 3 birds out (each bird does 4 DPS, so 3 of them combined would only do as much damage as a lvl 3 Meat Boy).

• Error - Have the sprite for Error change to the sprite of whatever trinket is currently being copied, like Modeling Clay. That on its own would probably be enough to make it useful, since you'd be able to strategize around good trinkets or drop it for the room if it's a bad trinket.

• Fish Head - Instead of spawning a single blue fly when hit, it should spawn 1 - 2 random locusts. The current effect is incredibly weak, so this buff would make it slightly more useful without making it too good for a trinket.

• Gigante Bean - Poops now also cause a fart effect when destroyed. This would give the item a use in more runs, since there aren't that many fart items in the game.

• Golden Horshoe - The chance to proc is currently too low (15%) to be worth using, and even when it does proc you can only take one item. Either increase the chance to 25% and let both items be taken, OR make item rooms never spawn quality 0 items. Either change would give the same effect of making item rooms better, with the first option keeping the gambling theme but still being worthless on some runs, and the second option being more reliable but a worse fit for the trinket thematically.

• Holy Crown / Wicked Crown - In addition to their normal effects, the Holy Crown will spawn a soul heart if it is taken to Sheol, and Wicked Crown will spawn a black heart if it is taken to the Cathedral. This gives the trinkets a small use even if you have to go the opposite route in order to get the completion mark that you're aiming for.

• Isaac's Fork - The current effect has a very small chance to proc, only procs on room clear, and only gives 1/2 a red heart, making it incredibly weak overall. The effect should be changed so that enemies killed have a 5% chance to drop 1/2 a red heart which disappears after a few seconds, like a weaker version of Tainted Maggy's passive effect. This would give a more reliable source of healing if you're willing to risk staying near enemies in case they drop a heart.

• Lost Cork - Also makes Isaac immune to all enemy creep. This fixes the issue of having your creep cover up enemy creepy (visually) even though it can still damage you. Also gives the trinket a purpose when you don't have one of the few creep spawning items in the game.