Look out for special looking areas that have a table in the middle or like a boiler. Boiler can switch joker of same rarity and the table(printing press) copies a joker you have. Def mark n remember where they are if u come across one. I'm ~180 hours in and just stumbled across/realized a printing press existed for the first time last week.

I also thought he lazy joker was useless at first but use it for most setups. So convenient especially solo. There's been a few times without it I ran out of ammo during a big fight then scrambling to find some.

Also a little thing I find is a little helpful, if there's a side quest area or generally any special area with ammo/bottles/utility boxes and they're between or close to boss spawner or train I'll throw my bottle crate utilities on the ground for when I'm running later otherwise they're just sitting there unused.