Collapsible Handheld Fan

The only reliable 3d printable device you will need to stay cool this summer when all electric options fail. 

Between June and September is no joke when the blazing heat from the sun hits your skin. The pores in your skin begins to open up overflowing with salty sweat forming like condensation on a window transforming into droplets cascading down the surface of your skin. This is your body attempt to not over heat, to not over heat, your body needs air flow to evaporate the sweat in hopes to feel a cooling sensation.