All the adventure time references and cameos i know
Inside Cartoon Network:
On the episode ‘’Where the wild Chads are?’’ It seems like Chad is watching something interesting
On ‘’Benson’s sleepover’’, a small Jake plush appears on the shelf
Black hat Finn poster on a wall on the Clarence episode ‘’Attack the block party’’ (thank you @mewberty for telling me :D)
-We bare bears:
On ‘’My clique’’,guess what is Chloe Park watching on TV
On the Steven universe and UG crossover episode appears a Finn mention just above Steven’s name on UG’s list.
Out of Cartoon Network:
‘’Adventure time’’ mention on a pannel of the Bravest warriors comic issue 22
A small Jake plush(i want to think so) is falling on the Bravest warriors Holo John special (2015)
A kid is cosplaying Finn on the South park episode ‘’A nightmare of facetime’’
Finn and Jake appear fettered on the Futurama episode ‘’Leela and the genestalk’’
The simpsons parodied Adventure time on the new episode couch gag ‘’Monty Burns’’
But actually they had parodied it before on the Halloween special ‘’the treehouse of horrors 2014′’
And finally, the most controversial.This is my interpretation so it is very possible that i am wrong.
On the Cleveland Show episode ‘’hot cocoa bang bang’’ the family visits the San Diego comic con.On one scene we can see a character that reminds me a lot of Adam Muto wearing a Jake the dog T-shirt.
That was all,friends. If someone has more references, please add them to the pile.Thank you! <3