The first question that comes to my mind when I see something like this Inflatable Color-changing Lap is: why? But perhaps I should be less cynical and ask "why not?" instead, as really, this thing is kind of neat. I guess.
Basically it's a lamp that you can inflate, and then when you stick a lightbulb in it it looks all neat and changes colors and stuff. It cycles through colors when its on, making it totally trippy. I guess if you are always on the go and like to have a weird and unique light source on hand at all times, this could be totally worth the $15. Otherwise… not so much.