Customizable ergonomic adaptor for the Logitech MX Anywhere 3s. It could fit other models, but has not been tested.
I have included the Fusion 360 file so you can adjust the profiles to suit what feels comfortable for you. You can change the shape of the support and the position of the knuckle placement by changing the sketch plane offset.
Just don't move the front profile too far forward or you could have issues clicking the buttons.
Print and fit to the top of the mouse with 3m VHB tape like a little mouse backpack. :)
Does not need supports. Lay it on the flat face on the front. Lower layer heights give a smoother texture.
The author marked this model as their own original creation.