While I was on the Akismet team we had an idea to create a really neat gift to send to people who were big users of the service. Something to commemorate big milestones like 1 million spam comments blocked. At the time I was really into NES repro carts so I got the idea to do up some custom Akismet branded NES carts. I got Dan to start on the design and I went in search of how I was actually going to produce them.
I started by finding the carts which I ended up getting from estarland for like $1.75 a piece. I then found a guy who does custom labels. I ordered a few test ones and they were so good I immediately ordered 50 more. Unfortunately the plan never got off the ground so only 4 carts were ever released into the wild. I have the rest sitting in my closet somewhere.