In the last jam, I played a game that featured a spiked thumbnail hole, and I wasn't really willing to go through and try to do that. I don't remember if you were its creator, but it seems very much like your thing.
It wasn't me but that definetely seems like my thing :)
Do you happen to watch GrayStillPlays? He's a youtuber who's gone through a lot of that stuff, I think you'll like him.
Just watched a video of him, really good content. Thanks for the suggestion!