Bike coffee cup holder

Cup holder to fit regular sized take away coffee cups. I designed the clamp to fit around my stem (~24.4mm) so it's a bit too loose for standard handlebars (22.2mm) without some tape or rubber. It'd be an easy modification to make the clamp smaller.

July '14 - I found that a disposable cup would splash too much on my ride to work so I've switched to a keep cup and made the whole thing bigger to fit a medium (10oz) keep cup. The cap stop the splashing and the rubber ring keeps it from moving a