This one used about 135 10" hot glue sticks. In this instructable I'll walk through making a much smaller one that probably uses something closer to 5 or 6 sticks.
I made this project over at TechShop (http://techshop.ws/).
Step 1: Software, tools & materials
123D Make (free)
Adobe Illustrator or CorelDRAW (free trials available)
18"x24" sheets of 3/8" plywood (2x)
Hot glue/hot glue gun