Disclosure: This is a sponsored post. All opinions stated are genuine and my own.
Getting a Theefun Plasma Ball in your room is a big deal when you are 9-years-old. The light follows your touch, which makes it a novelty item that is perfectly suited for a child's room. The light moves wherever you touch the globe, adding an interesting addition to my son's already very fun bedroom. There is an on/off switch which is perfect because that means it doesn't have to run continuously.
My son has a clock that changes colors in his room too, and on the back of it, there are USB ports. One of the ways the Plasma Ball runs is via USB, so that works out well. I set them side-by-side and just keep it plugged in all of the time (remember it has an on/off switch, so that doesn't mean it's always on, it just means it's always charged and ready to go when you want it).
You can also run it with 4 AAA batteries. We'll continue using the USB for now, but it's nice to have options. What makes me most delighted about this plasma ball is that it's a simple thing that gives my son a happy feeling every time he goes into his room.