I made a cartoon maker that allows the mashup of memes: https://www.superanimo.com/

I'm making a bet that the future of memes are short videos that tell more of a story than a simple image macro. Hopefully I can turn SuperAnimo into an app someday but right now it's just a buggy website no one uses. It's still my favorite project though - so I'll keep plugging away at features and maybe one day I'll get some users.