Simple door , wall stopper and protector. Call it as you want. Its cheap and effective.
It also looks good.
There are two versions included.
One without hole - could be glued /fixed using double side tape
Second with a hole - could be mounted with screw
MakerBot Replicator Z18
I printed it in PLA. In my opinion is strong and flexible enough.
You could use also flexible materials as NINJA FLEX...etc.