Single perimeter: double witch hut, slime farm; locations for drowned, squid, and spider farms; controls and functionality.
This is my take on some things I’ve found interesting and useful – it’s cool to see people build large farms and multiple perimeters, but I think most of us can get more than we need from just a single perimeter containing multiple farms.
Depending on your interests, you can select locations with specific biomes for different kinds of farms or different arrangements of farms – for a general-purpose perimeter I’d probably skim through single witch hut locations (using something like chunkbase, or amidst), and see what the surrounding areas would include for biomes, structures, etc. given the possible afk spots in a circle around the witch hut. A little bit of algebra/trig is your friend.
(I forgot to mention: I marked out the river biomes in range of the player to figure out where I could set up the drowned and squid farms within the perimeter; the decorative nether side is to scale 1:8.)
I need a proper mic. :(
Links:
Ilmango single chunk slime farm
• Fast 1 Chunk Slime Farm 1.13.1 (30,000 sli...
Ilmango river biome drowned farm
• River Biome Trident Farm