The constant struggle for product designers is (or should be): Am I creating something of true utility, or just bringing more stuff into the world?
I do get annoyed at how bottles/cans in bathrooms/kitchens get wet, collect water at the bottom and leave a ring on surfaces. But I cannot countenance the thought of buying rubberized coasters for them.
GRIPPONZ snaps on to the bottom of the can and stays on to prevent damage to the surface. When you are done with that can, just remove GRIPPONZ, wash it with warm soapy water, and use it again.
Clean freaks who hate rust marks might find them desirable:
What say you? Valid “problem” and worthwhile product, or no?