for hand sanitizer! LEGOs suspended in a liquid soap dispenser. Fun to put out at a LEGO party or everyday use in your kids' bathroom! I'd probably search for a cuter dispenser, maybe more geometrical, but still such a cute idea!
Artifact Thos photo shows a fan who became bored at work and decided to make a bow and arrow using pencils, rubberbands, paper clips and some other office supplies. The bow and arrow is used by Katniss Everdeen in The Hunger Games.
Marshmallow Catapult: I thought this would be a fun and great idea for students to make in class. The project of the marshmallow catapult incorporates both art and science.when you can't buy them all a marshmallow gun!