My dad watches DD (she's 2) on Thursdays. Usually they go to the park for a few hours in the afternoon. But this week it's supposed to be record high temps (in the high 90s) so they probably won't go. I was thinking of suggesting a play gym, but my dad can't really crawl or climb around to play with DD. I've never been to a play gym - does the caregiver usually need to be interacting with LO or can they sit back while LO plays on their own?