If you just need money for the skins, I'd sell them if I were you and that's it. If you want something more interesting or even somewhat gambling-like, try playing with skins for case openings, upgrades, or other things. There are platforms like Fastcase, I know about it because I read this review https://washingtonbeerblog.com/fastcase-review-2026-an-honest-look-at-the-cs2-case-opening-platform/. Basically, it's like gambling, where you make a bet with a skin or money and you can either multiply it or lose it.