Portable Silicone USB Rechargeable Multicolor LED Night Light $7.97 AC FS w/ Prime
I bought one of these last time, it's pretty cool and will make a great gift for my niece. You can pretty much just tap it to change lighting modes, or tap the table it's sitting on. Charges over USB and has an internal battery.
Apply coupon code (updated)HJFPOIPP during checkout for discounted price.