Printed PLA on a Bambu A1 Mini, works great! Part doesn't seem to be particularly load-bearing, so PLA should be fine. Sliced with Bambu slicer, organic supports, in default orientation, came out perfect; required a light touch from a hammer to get it into position, works great.
This model saved my butt today! Ahead of a trip, we were transitioning our Yoyo from Bassinet mode to Newborn-Pack mode; previously it was in the 6+ mode. Only the Newborn-Pack mode requires this part... so we never noticed one was missing! Our flight is tomorrow, no time to purchase the replacement part, definitely not design-print-iterate it myself. I thought "what are the chances someone has already modeled this"? 3D printer paid for itself right here.

