Ever wonder what an entire store dedicated to M&Ms would be like? Well, the answer is only a plane ride away. The M&M store on the Las Vegas Strip is a multi-storied shrine to the great American candy, and should be firmly at the top of any "free stuff to do in Vegas" list.
In addition to the brand clothing and entirely expected (and awesome) candy taps, there were stuffed toys and a very cool mural of the evolution of the M&M mascots. It takes about fifteen minutes to go through all of it, and I'd say it's entirely worth the time. Plus, you can walk out of there with a giant bag of peanut M&Ms in the colors of your choosing. I can't think of a better souvenir.