Summer ideas?

Hey! Im a rising junior in Florida this summer. I am signed up for a few dual enrollment courses, and I will be working on developing an app and website which correlate to a learning program I’m currently developing.

Somehow this won’t be enough to keep me busy, though, lol. So, does anyone know of any good (but not expensive!) ideas for how to improve applications w summer activities? Like i said, working on some projects and dual enrolled already.

Thanks!!