Dickie D is back with Smart Phone Disco Lights! It doesn't rotate, but the flashing colorful disco lights inside give that illusion. It can be powered by your smartphone, an external battery charger, or even plugged into a computer. Once plugged into a power source it lights up to the rhythm of your music or even your voice! As you'll see in the video it does give off quite a bit of light for something that small. On Amazon, they are only $12.00 for three of them! But wait, there's more. Each one of the three came with adapters for micro-USB, USB-C and a lightning connector. Plus, you can plug them directly into a computer the USB-A plug built into the light.