so the “obvious” thing that’s doable even when solo is just “hobbies”. music making, game making, pottery if you can get ahold of (someone with) a kiln, drawing, etc.

but on the non-creative side (because let’s be honest as a teen you’re often too mentally exhausted from school for those), hop on a bike, choose a direction, and find all the weird treasures on the outskirts of town. plenty of “weird things in the desert” and all that — but people take that trope too literally to notice that it’s really “weird things in the places people don’t frequent”: last week i stumbled across a few pallets of bees staged off a gravel road 5mi from my home. dunno if they’re being transported, brought in for pollination, or what, but it was a fun find all the same.