This is a baseball bat hanger/holder that you can hang up to 3 baseball bats from. 

I've uploaded two versions. One is a pretty standard wall-mount style with some countersunk holes for screws. 

The other is the original version I made, which was intended to sit on a lip on my book shelf so I could hang bats off the side (this is what you see in the pictures). In order to secure it firmly, I put some cutouts for m3 square nuts and m3 screws in the lower part of the hanger, which are intended to be used as set screws. Seeing as this version is fit for a unique use case and likely not applicable to most people, I made the more standard wall-mount version as well, which I'm hoping is more helpful. But, maybe someone will want this version too.

I would recommend a high percentage infill to keep it strong. I printed mine at 100% infill and it is plenty strong.