YankoDesign - It’s not the first time you heard us warn you about the repercussions of sitting on the computer for too long. Stiff back, sore wrists, numb legs….the list is endless! Looks to me that we all need a YoYo Mouse! This cute concept forces you to get up and do some Yo-Yo tricks to re-energize it because the battery drains out fast! Works best for me be, given that my wireless mouse runs out of battery ever so often.