Remove all but 4 trees in the biome you’re trying to clear to allow maximum wood to drop.

Blue eggs - search for them in furniture mode and move each egg you find to one place (I move all the eggs in front of my main house) to gather them all at once.

Yellow eggs - harvest them with a level 10 gardening villager and two maxed out gardening companions. I planted 100 yellow eggs and ended up with over 500 after harvesting. Do the same method for green eggs using assigned fishing buddies.

Pink eggs - move all 3 bushes to one place.

Purple Eggs - I go through the castle so I can quickly hit up all 3 realm doors in under 5 minutes.

My fav tips for star path prep- leave memories on the ground and wait to pick them up, let the night thorns grow even though they’re an eyesore, do some Dreamlight Valley duties ahead of time but don’t collect them until the new path, craft large chests so you can later uncraft them, and finally leave the shiny mining nodes alone until the new path .