Offroad Office Chair

(you can basically vote now, it's not a complicated idea)

Everybody who's ever worked in an office environment has, at some time or another, taken a disproportionate amount of amusement from scooting round the place in an office chair. I am sure, dear reader, that you have many hilarious anecdotes involving this sort of activity, but keep 'em to yourself because nobody cares.

However, problems arise because the wheels supplied with these chairs are generally pathetic, preventing true office mobility.

I think the humble office chair would benefit from some big knobbly wheels. These could be cunningly mounted in swivel mounts that could be raised or lowered as required to improve stability or allow a higher ride. On a day-to-day basis, this would mean that areas that were once out of bounds(lifts, for example, or the boss' office with his swanky deep shag carpet), would once again be easily accessible to scooting persons. After-hours chair races could be extended to include different floors, and would no longer have to be cancelled because someone had run a power cable across the corridor.

This would also open the way for a whole new tranche of extreme sports, which I leave to your imagination to create.