I now have segmented cups available. The cup is large enough to accommodate a can or bottle with a soft koozie on it.
Or, you can drink from it since the epoxy is food safe. It keeps liquid cool much longer than glass containers. I leave the inside slightly rough to keep koozies from coming out very easily.
They are made from different species of wood that are laminated together and then a bottom is attached. The cup is then covered with epoxy on the outside and the inside to make it waterproof. The Black Walnut, Oak, Ash, and Pine ones are very pretty. The Cherry, Oak, and Pine ones really look great too.