Help needed: Netlify's Dusty Domains event – Give me your domain ideas

Netlify has this great event for December: dusty.domains, but I don’t have any old domains. I still want to participate, and that's where you come in! I need domain ideas. For every domain idea I get (that's an available domain), I'll donate $1 to one of the four charities on the Dusty Domains site (up to $100).