This contains a generic bar and a cup holder for Unitree Go 1 quadrupedal.
The generic bar has 25mm spacing each with a M3 screw hole (to make this last longer, I made these holes anticipating thread inserts like this one: https://www.amazon.com/gp/product/B087NBYF65/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1 It is pretty simple to insert with soldering iron). It has 9 holes on each side.
It also contains a cup holder design that you can mount into these M3 holes with 15mm M3 countersink. Here is the cup holder installed on the generic bar installed on the Unitree Go 1:
I always upload my FreeCAD files with these models. Feel free to modify and add more things and publish!
The author hasn't provided the model origin yet.