You could launch a contest in which some startups that would like to use the domain can offer you a small stake in exchange for the domain. You pick up the star

You could launch a contest in which some startups that would like to use the domain can offer you a small stake in exchange for the domain. You pick up the startup you like the most and lease the domain to them. Looks like a fair change that can return something in a long-term. If the startup doesn't work in, lets say, 1 year, you get your domain back.