Design, build, and battle your own balloon head warrior using straws, strings, skewers, and more.  What will you fight for?  Honor?  Glory? Grades?  Only one may emerge victorious!

Similar, commercial products:  Combat Airhead, Rockem Sockem

Design a portable flashlight and enjoy fresh breath!

Instructables

Create a classic wooden puzzle block & brain teaser.

Design, build, and test mini catapults.  Compete against your classmates.

Follow another Tech Ed teacher's lessons to create your own computer program

Use the mini lathe to create a one-of-a-kind pen.