Show people just how retro you are before they even step through your front door with the Cassette Doormat. From the ThinkGeek page:
There was a piece of music that haunted us throughout the early 90s: Electric Boogie and its corresponding line dance, the Electric Slide. It seemed that no matter where we were, someone had a cassette in their backpack or in the zipper pouch of their Trapper Keeper, and they were willing to whip it out, pop it into the nearest boom box, and force all nearby people to dance. Thankfully, we had several ranks in Hide, so we disappeared into the shadows with our Dragonlance novel, peeking out every so often at what our classmates called "fun."