affordable summer programs/activities?

I’m a current HS sophomore and kinda regretting not searching for summer programs/activities sooner. Honestly, it doesn’t have to be a huge program, I’m looking for anything good to do over the summer (camps, internships). My main thing is money, I really can’t spend much and a lot of prestigious and free programs are closed. I’m mainly looking for stuff that are offered all over the country, but if they are any offered specifically in the Atlanta area I would love to look into it.

CMU SAMS and UW ESP are still open; they’re both free or very close to it.