I play Mario a lot. It's really not fun at all after the first week, but it's something to do. Mine didn't come with a puzzle pack and I don't have a USB cable for it so ;o

Sometimes I write programs for it to do things for me, like spouting back quotes. I also like to pick up the calculators of my friends and leave messages. The calc 2 kids use TI-92s, which make it easy to spell out obscenities to surprise them when they open it back up.