- enactic/openarm_mujoco: https://github.com/enactic/openarm_mujoco

- "Robots – Comprehensive catalog of 115 humanoid and quadruped robots" re: MJCF in mujoco_menagerie, awesomerobots, robot-descriptions/awesome-robot-descriptions: https://news.ycombinator.com/item?id=45727432

- I can think of at least one museum that already has interactive demo robot arms that are in need of repair or replacement