Everyone loves an advent calendar, but if you're looking for something a little less Christmas-y and a little more science-y, this crystal advent calendar is a great option. They even fit together to look like a real cry...

Jens and Anna designed some papercraft monsters to share. Check out the Snake o'Death, Bone Crusher, Giant Bulging Orb, Tentacle Slimer, Gut Gobbler, Eyeball Mucher, and Smiling Terror. Download the patterns, print out,...