A Design that Hams and Musicians Would Love

I was inspired to post a design on spreadshirt.com to appeal to Hams and musicians alike. It's an octal (8-pin) tube socket diagram that can be emblazoned on a T-Shirt or a coffee cup or phone case. On the right T-shirt, it could resemble Iron Man's Arc Reactor! I thought it would be fun to wear to a hamfest, so I designed it for myself and thought I'd share.  Buy one if you're so inclined!

They're on my spreadshirt site here: http://klystrontech.spreadshirt.com/