Ultimaker Original sound damping foot
I have migrated to Printables because of the security and UX issues here at Thingiverse. You can find this model here:
https://www.printables.com/model/166854-ultimaker-original-sound-damping-foot
A small sound damping foot for the Ultimaker Original and Original+. Probably fits UM2 too. Prints fast, uses little material.