Here's my birdhouse on Thingiverse:
Reasonably simple set up with no supports needed: Print A: 1 Birdhouse Top B: 1 Birdhouse Bottom (it has a 1-1/2" hole for various birds). It also has a 1/4" hole for a perch if you want a perch! C: 1 Birdhouse Hole (1-1/8" hole for Wrens) (Plug perch hole for a Wren house!) D: 1 Birdhouse Plug...
www.thingiverse.com
I've got a lot of things up there getting shared (same user name as here).
As to your last statement... Thank you, but I joined the service in 1971 because I thought it was the right thing to do (for me) at the time and not for any special meaning that the MSM has been hyping for the last few years...