I'm a little late posting this DIY since I mailed them a few weeks ago, but better late than never! Our wedding theme is Rocked Out Love. So, we decided to make our STDs Backstage Passes!
FI designed them and had them printed. I cut them down and hand laminated them, then added purple lanyards. FI designed the stamps and I made the envelopes out of black metallic paper I ordered online.
Front:

Back:

Envelopes:

All Dressed Up & Ready to Go (only good shot of stamps):

These were such a labor of love! Though, at times, they were a massive pain in the butt! =P But totally worth it in the end!