@lcnolen2022 Depending on your kid(s) ages, these may or may not work:
That’s It Bars (2 ingredients),freeze dried fruit, peanut butter bambas. I think crumbs are just par for the course though, I don’t think they are completely avoidable.
@caitm The spinners by Fat Brain Toys are fun. They have a suction cup but honestly kiddo played with them not mounted on window
Dimpl by Fat Brain toys is a go to for us.