Making a mini-fridge for my locker?
I am trying to build a fridge for a my locker at school to keep my drinks cold. I am going to construct it using the method in "$5 Mini USB Fridge!", but since it's in a locker I obviously can't use USB power. I thought about powering it with a 9V, but I don't know if that will last very long. Any ideas on how I could power it?