Teenage Engineering always seem to have an air of laid-back 'cool' about their products, the OpLab is no different. The idea of the little lab is that you can have all of your connectivity in one little place, syncing all of your electronic instruments in one tray.
You could use a mouse to bend pitch, or use an old hard drive as a scratch pad. You can even turn your own body into a musical instrument (great if you are in the business of interpretive dance or you're a stripogram) by wearing the TS-1 sneaker. A sensor attached to the show will trigger when you stomp your foot to the ground, and could trigger a kick drum or any other sample.
For all of these nifty little ideas, check out the OpLab page on Teenage Engineering's website.