• Pinterest

Stories this photo appears in:

Calculator Batteries, Killer Terms

Matt: My solar-powered calculator. How long will it last? Is it a perpetual-motion machine that will go on calculating into the next millennium? Does it have any parts that will die off like any ordinary ...


Sign in to comment

Win a $25 Gift Card to
The Broken Yolk Cafe

Join our newsletter list

Each newsletter subscription means another chance to win!