Ever spilled your beer?

After not one, but TWO consecutive liquid casualties on stage at The Clarendon Hotel, Katoomba (taken out skittle-style by Mic Conway's flying props) it was off to the shed-kitchen to cook up a solution!
Since then the beverage holder has found a home on my bass stand, but it is willing to travel for work!

I once attached it to my bike, to carry a take away coffee a short and sedate distance...