I figure this is a good way to get the conversation going.
We currently have one community tank with a dwarf gourami, corydoras, neon tetras, a small colony of cherry shrimp, an assassin snail, and a plague of ramshorn snails that hitched a ride on some water lettuce we bought a few years ago.
I have a 75 g with corydoras, panda loaches, an old Bolivian ram, tetras, mostly rummy nose, shrimps. Also accidental ramshorn, in a very nice orange color that looks great on the plants