This is a remix of the "Red Solo Cup Holder with Marker" by FinnWii3D. I changed it to have a circular opening for solo cups rather than the square opening.
It fits classic solo cups perfectly but you can put any disposable cup in it of course.
There is still a slot to hold a sharpie just like the original design.
Solo_Cup_Holder_-_Round_Remix.stl | 407.7KB |