The conservatory bathroom door is painted.
It was easy, therefore, to hang up my door knocker that looks like a frog. Actually I have two similar ones with different finishes.
I chose the verdigris knocker and simply screwed it into the door with some short drywall screws.
Unfortunately the froggie’s little foot that actually makes the knocking sound was also damaging the new paint so I stuck a tiny piece of self-adhesive felt furniture pad on his foot.
He’s more quiet and less destructive now.
Do you have a door knocker on any of your doors?