What should I do with my old computer tower?

Hey there, I'm wondering what my best options are for my old computer tower. It's been sitting around for a while and I'm not sure if it's worth keeping or if there's a better way to dispose of it. Should I try to sell it online? Donate it to a local charity? Or is there some other option I haven't thought of? I'm not very tech-savvy, so I'm not sure what the best course of action is. Any advice would be greatly appreciated!