Help! Struggling to keep him occupied

Hey guys was wondering what ideas everyone has for keeping a 4 month old occupied. He still struggling sitting up so he isn't ready for the bounce yet. So far I have tied a balloon to his leg that lasts a bit, floor mat with things dangling, also toys around him, we have a "frog" chair with toys on it. There is a tv show he's obsessed with on Netflix but I refuse to put it on every day lol. He wants to do so much more than what he is capable of and is getting bored so fast! I can't constantly sing dance and do crazy weird mom things ALL day lol please help any other ideas??