trying to plan a fun date but I'm restricted to non-public places and not too much exertion... help???

Hey reddit! It's almost the birthday of the guy I've been seeing, and I want to do something fun for him for his birthday, but I'm having trouble coming up with something. First off, we're not serious, so I'm not trying to do something super romantic. For health reasons I won't get into, he can't be in public places and can't eat food prepared at restaurants. Ideally I want to do something that gets him out of the house since he finally has the energy to do things, but he doesn't have a ton of energy which rules out any activities with a lot of exertion.

So help me reddit! What can I do for him?