Here's all I know:
Applied Horticulture is good for mass berry and crop production.
Tentacles are OP.
You can use the End is Nigh for combat purposes, charging Volt Goats, or charging your fellow WX78.
Sleepytime Stories is basically just a panflute that costs sanity.
Birds of the World with a Feather Hat is quite rewarding.
Use Birds of the World, the Reed Trap setpiece, and the Feather Hat for mass blowdart production.
Here's a question for you guys:
I've heard alot about tentacles not being able to spawn on certain turfs, namely grass turf. Is this true in any situation? If I'm trapped in the middle of some walls and spawn tentacles, what will happen?