Model originally uploaded to Thingiverse at https://www.thingiverse.com/thing:4592880.

I was looking for a simple way to mount the lighthouses using either nails or command strips. I used the same wedge based system as other designs. I made the base with the angled nail holes similar to a picture hanger and made the base large enough to hold multiple command strips to ensure it stays attached to the wall. I have tested both methods and both stayed up without any issues for multiple months.