I figured it's kinda lame to show up at Maker Faire empty-handed. I thought about costumes, but that didn't really seem to click. I figured I could do some blinky build but didn't know if I had time for that. But when I started thinking about what type of Hackaday T-shirt I wanted to wear the idea of having a giant Hackaday logo with me popped to mind.

The first idea was to make a Jolly Wrencher on the top of a tall pole (like 8 feet). But who wants to carry that around all day? So then got to thinking about making it backpack-mounted.

I used Posterazor (which is in the Ubuntu repos) to blow up and print out the logo

After cutting it out with scissors and taping all the pieces together I had a template, and a way to test the size of it (what a gorgeous selfie!).

That was Saturday morning. I went out that afternoon and bought a foam cutting wand from Michael's (a hobby store). You can find them in the floral foam area. It's very much like a soldering iron but has about a 6-inch needle that gets hot enough to cut the foam. I also bought four 2'x2' pieces of 1" foam. I would have preferred to get 2" foam but I have a sedan so getting it home can be a problem. I thought about cutting it in the parking lot, but the 4'x8' sheets also have scoring where you can break it into long strips (to put between studs?) and I didn't want that.