[sudo-discuss] help with laser cutting (& design) ?

Hi all, I've been meaning to design and laser cut a contraption for our Science Sideshow at the Cal Academy NightLive LIVE <http://www.calacademy.org/nightlife/nightlife-live-june> event this Thursday evening, but I'm rapidly running out of time. Anyone able to give me a hand? Basically, I found these vases that look just like giant test tubes - long cylinder with a rounded bottom. So now I want to make a giant test tube rack, and have them sitting at our booth with some food color and dry ice, steaming away. Would look awesome! I got about halfway through designing the thing in Inkscape, but I've never dealt with designing fasteners for plywood before. Needs to have a wide base so it doesn't tip over, but also needs to be hangable from a wall, so the base may need to be removable. If I were to order this through Ponoko, I'd probably go with something like their 1/4 inch amber bamboo plywood <http://www.ponoko.com/make-and-sell/show-material/226-bamboo-amber-3-ply>. Is there any plywood at Sudo? Recommendations for a good place to buy nice plywood? Patrik