I've given to several Bitcoin projects doing "charity" (to be fair, I don't like to call it that way, more like "projects to empower people") over Geyser. It's charity in the sense that I don't expect a return on my money and I feel like there is a chance the money might be doing some good, for someone else. Also, with the lightning payments, only very little money gets lost in overhead and most arrives directly to the person needing it. Those projects also often allow one to investigate how the money will be managed by checking social media activity of the person setting up the project, and thus, it doesn't feel like dumping money into a black hole.