The power key on these old Apple ADB keyboards seems to break all of the time. Now, you can print your own!
You'll probably want to print this in two parts: the key itself with high resolution, and the base with a lower vertical resolution, such as .2 mm layer height. There are three bases that print with slightly different heights of L, M, and S. M ended up being the best fit for my specific keyboard. The parts simply snap together.
The author marked this model as their own original creation.