A4C offers these Bluetooth Dancing Water Speakers with LED Lights for $29.95 with free shipping. That's the lowest total price we could find for a pair of Bluetooth dancing water speakers by $10. They put on a display of light and water in response to music. They feature four LEDs, Bluetooth connectivity, USB connectivity, and a 3.5mm auxiliary jack. Deal ends January 12.
WD-40 is handy in a lot more situations than you likely realize.