5-Minute Projects

The cheapest 3D printer you can get.

Make your own portable hot packs

The dust can wait, it’s time for a frosty one

Downsize your pocket cargo with a custom-fit keychain

Give your desk a little retro-tech vibe while cleaning out the old office junk drawer

Why recycle when you can reuse? Editor Mike builds a Smurfberry Crunch spectrometer

Trash those CDs? Never! Let Bjorn and his 5-minute dumbbells pump you up

A step-by-step guide to getting YOUR projects on Popsci.com

Trick out your iPod three ways with Doug's handy guide

Clear the clutter without losing power