One of the rubber feet from my Vitamix blender went missing several years ago, but I was too cheap to buy a replacement. This was the first part I designed for my Reprap.
This is a small object, so you might run into warping issues starting at the transition between the wide and narrow portions. Print slowly - 15mm/s - and use the lowest extrusion temperature that your hot end can tolerate. A cooling fan will help, too.