When I've seen this ball I thought it is some joke, but you can really buy this thing. It doesn't look for first sight like future gadgets, it looks much more like gadget from past, but it has time digital display and time lock. What is purpose of this thing? Well, if you have kids, then you know how hard it is to persuade them to study, or if you are student and you find it really hard to concentrate and you tend to do anything else except studying, then you might find this really useful. It weights 9,5kgs and if you want to study fro example for two hours, you just chain it to your ankle, set the timer for two hours and it will not release you until the time is up. Luckily for all kids, it cannot be set to more than four hours. It was really hell for me to study for even one hour when I was kid, so I'm sure kids will not be so happy that it has timer for "only" four hours. Check it out, that MBA is waiting for you :)