Ever had a coffee on a bike and didn’t know where to put the cup down after a couple sips? Well, the Ring-O-Star Bike Cup Holder solves all your coffee cup issues.

Although some may think this design is dangerous, the idea behind Paul Kweton’s construction is fantastic. The silicon ring is the part that holds your coffee, and attaches to an aluminum bar-end by an expanding bolt.

A dangerous weapon, or a handy coffee cup holder? You decide.