Which shipping company is kindest to your packages? We mailed a bunch of sensors on an epic journey to find out

2013 Gift Guide: Our holiday gear and gadget picks

With help from our friends at Instructables: 8 Great DIY Gifts. This one: How to build a cool retro flip clock.

With help from our friends at Instructables: 8 Great DIY Gifts. This one: How to build a cool retro flip clock.