I enjoyed the open source ball joint, and had a need to have some degrees of freedom to orient a dowel across our baby's pack 'n play. Therefore I designed this snap on to the frame of a Graco Pack ‘n’ play for a ¾" wooden dowel. We put streamers and hanging toys on the dowel suspended across for entertainment. Note please still use under supervision. For the construction I ended up splitting the screw in half then gluing together with threads aligned using cyanoacrylate.
The author remixed this model.