I always make my own.
if you don't have access to a nice color laster printer, save a small jpg file onto disk and bring it to kinkos
they are exactly 1" by 1" and all you have to do is put some sticky crap on the back to make it stick well (like a stamp)
works like a CHARM
i have Seti@home, NVIDIA, Antec, AMD, MSI, Asus case badges, only 2 are not made.
looks perfect! all you gotta do is find the JPGs you want!