Made a bracket to mount my Tobii Eye Tracker 4C on a standard camera tripod mount.

Used 1/4" female threaded brass embedded insert nuts (link below). Use a soldering iron to melt it into the bottom where the hole is. This fitting is the same as the bolt on a standard camera mount.

https://www.amazon.com/dp/B07LBR4J6B?psc=1&ref=ppx_yo2ov_dt_b_product_details