Mighty Mug

The World's First 'Unspillable' Mug (0.47 Litre capacity)
It won't fall over if you accidentally knock it
Lift it straight up and it is as easy to lift as any other mug
Use on any solid, flat surface ie. most desks or tables
Double wall construction keeps your drink hot or cold for longer

Its on sale right now, so check it out :)