Starbucks Metal Cup Ring

thingiverse

This is a silly thing I made, but it brings me joy and I like promoting problem solving with 3D printing with my students. My old Starbucks metal cup had a lid that stuck out and was easily carried (i.e. not dropped) by letting it slide through my hand until my fingers caught the lip of the lid. Been used to that for years. Their new metal cups have a lid that does not stick out at all and I keep dropping it because it slips through my hand and I forget it's different. So, I made this tension fit ring that just slides up to about half an inch from the top. If you pull it up tightly it stays put until you want to take it off for washing or whatever. If this bugs you too, try this fix!