2 hours of searching the net for every major Furaffinity icon/avatar bandwagons/memes ever has gotten me nowhere and I am at my wits's end.
Is there a collection of memes somewhere besides 'knowyourmemes'? They don't seem to have what I'm looking for.
Here are some of the major FA memes/bandwagons from past years:

Snupdawg's za za za za za

Peanut butter jelly time banana costume dance
http://knowyourmeme.com/memes/peanut-butter-jelly-time

Team Fortress 2

Caramel Danzen
http://www.furaffinity.net/view/8480582/ <-possibly plagerized though(not original animation)

onion twirl

animated wing bobble

bouncing chibi

cleavage sweater
http://www.furaffinity.net/view/15284711/

Fender head bobble
http://www.furaffinity.net/view/1953486/ <-reversed

grinning
http://www.furaffinity.net/view/15284711/

grumpy cat

butts
http://www.furaffinity.net/view/18746666/

Anyone remember where these came from or some that I haven't mentioned?

i don't know exactly what you're asking, though the Vinesauce Vinebooru is a collection of every silly meme or half-meme that showed up on Vinesauce at one point, interspersed with surprisingly high-quality art.