Tiger Useless Box, Hezong Don't Touch Gag Toys (Real Wood) Wood Turn the Useless Box on, and it will turn itself off. That's all it does. Perfect Practical Jokes gift Fully assembled - save yourself the trouble of putting the Useless Box Kit together. Build this fun kit and amaze everyone with how technology can do incredibly simple things. Useless Box made of real wood. Also can be a fine ornament on the desk or table. Completed Dimensions: approx. 7.87" x 4.33" x 3.74". Requires 3 AA Batteries (not included).