We needed a gopro mount for the turtlebots 2's here. This fit the bill fairly well.
I printed these in PLA so they can be composted later.
These are rather simple to install, I used 3-56 screws and nuts to attach the plate to the turtlebot, but I am mostly certain that 4-40 hardware will attach this plate to the turtlebot 2 rather well as long as you are using 4-40 ball headed cap screws.
This design was originally based off of files I found here: