I was telling my friends about how I'd set up the cage for my hedgie and why (they're as excited as I am). One of them wondered if anyone had ever made it so that the wheel on which the hedgie runs powers something else-- for example, provides power that is stored for 14 hours of light for the cage, or power stored for the heating element. Has anyone done this? It's all far beyond my (non-existent) electrical skills and so is not something I'm going to try, but I thought it was a fun idea and wanted to share it with y'all.