Quick project: mount for a directional wifi antenna (this one).
Nothing like wifi on a rainy day
I wanted to mount it in my window in a was that would be convenient to remove or reposition, so I whipped up a mount that used magnets to stick to the metal window frame. For the magnets, I used the same ones as I used for my filing cabinet clip (these ones).
I printed this upside down to avoid requiring any support material.
Then I 3D printed it, screwd in the antenna, and hot glued on the magnets.
The print actually has a slight error about halfway through, but the tolerance on the magnets was enough that it was still usable.