The usual Starbucks paper cups nest, but they're too tippy. I think that I can deform a standard "vente" Starbuck cup as follows: The usual cup is in the shape of a flattened "U". I propose to bend the top rim down until the cup looks like an inverted "w". If the curled rim now touches the table instead of the original base, then we have a wide base that won't tip over. This new deformed cup also nests just as well as its original version, because the inclination angles on the truncated cone sections still match. Although the deformed cup now holds less than 1/2 of its original volume, I think it could be made on nearly the same assembly line as the current generation cups. This new deformed cup also has the advantage that it doesn't require a "sleeve" to keep from burning your hand. At 01:55 PM 11/3/2014, Dave Dyer wrote:
How about a conventionally shaped cup with a slight outward bevel, but with 3 handles that are long enough to touch the desk, and serve as outriggers.