Our little guy loves climbing and pulling/pushing to stand on climbing blocks. He also loves toys that pop up/close, anything with a ball or something interactive for him to do.
my LO lovess the activity box and also a water mat but he also loves sticking everything in his mouth so he really enjoys everything but when he does get bored we let him crawl and floor and lay out all his toys and he gets excited again
My LO loves anything with a mirror on it! We have a Lovevery Mirror for her playpen and a tummy time mirror from Amazon with little pictures on it. She is obsessed 😆 She laughs at her reflection and keeps her entertained!