Check out this hamster-ball for humans. You could probably use it as a shield or something and use it as a personal “mobile” device at the same time.
VirtuSphere advantages:
- User can move in any direction; walk, jump, roll, crawl, run over virtually unlimited distances
- Life-like movements inside cyberspace
- Standalone or networked
- Multiplatform
- Need to change the purpose of use? Just reload the software
- Mobile solution, transportation in middle size car, assembled in 4 hour

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Check out more interesting categories: Auto, Consumer, Earth, Educational, Funny, Gadgets, Government, Industrial, Misc, Network, Travel.