This is Cheap but Fun - Three Colors When Moved Choices - Very Cool Stick

The LED Bubble Stick makes streaking RED/BLUE/ORANGE color trails when moved around. The acrylic light-up part of the wand is about 5" long and has a bubble pattern that intensifies the light effect. The barrel portion that contains 3 replaceable AG-13 batteries (included) is about 2" long. The light flashes through its LEDs at a super-fast frequency, creating the multi-color streak when in motion.  I normaly don't like this style stick. After checking it out first hand, WOW.  Bright, Bright colors at a great price. It will turn off on impact. Includes batteries (Three AG-13) and lanyard. 3 AG-13 Batteries are included