Our 20 year old cockatiel loves his stone. Often he sits on the same and also likes to sleep there. It should be so.
Unfortunately, it was with all the stones so that they no longer hung straight after some time. Therefore: 3D printing to the rescue ;-)
Printer Brand: Prusa
Printer: i3 MK3
Resolution: 0.24 or better
Infill: doesn't matter
Filament: Das Filament PETG Weiß