Free Summer Programs?

Hi all,
I’ve been looking around for some free or cheaper prestigious summer programs for high school students. I found a couple but feel like I may be missing some good ones. I am looking for a 1-2 week science or research program ideally under $1000. It would also be great if it were in New England or nearby to reduce travel costs. I likely wouldn’t qualify for financial aid in some of the more expensive options, but heard there were some selective and possibly free programs. Please let me know if you have anything to offer- they don’t have to be specific to my guidelines, I know others may also be looking for cheaper options
Thanks so much!