Design your own jewelry with Ponoko

Features the Solid State Depot logo and cryptic latitude/longitude for the hackerspace and are made from bamboo so they’re ultralight. Size is 50.8mm (2″) square. This laminated bamboo is surprisingly strong but still breakable, so this is more for presentation than for everyday use.

These aren't exactly cheap to cut since the entire face is laser-engraved and that takes time. They sell as donations to Solid State Depot for $10 and are available at the hackerspace in the products case.