I made a set of hive hooks for a friend of mine. They are used when doing a hive inspection. They hang off the front of the hive and act as hangers for up to 2 frames so you don't have to set them on the ground.
If you end up printing and using these, please post a photo of your make.
Late update: A helpful user pointed out that the picture didn't match the STL file. It turns out I had uploaded the wrong STL of an older iteration. The Fusion360 files were correct, just not the STL. The only difference was an extra cross member, I've now uploaded the correct STL file (V4). I left the older STL file (V2) just for posterity.
Added a hanger to fit 40mm wide hive edge.
0.6 nozzle, 0.3 layer height, 3 perimeters, 5 top and bottom.
Printed in AMZ3D Yellow PLA.
60mm/s, 210c, 55c on glass bed with glue stick. 1 brim layer.
Sliced with Slic3r Prusa edition.
I printed 4 at a time. To make arranging and rotating the parts on the bed I've included a copy of the STL which can be independently rotated. I was able to fit 4 hooks on a 180x180mm bed.
I started with the existing designs on thingiverse and redid the design in Fusion360, making it a little stronger and faster to print. (The fillets on the edges don't require the print head to slow down like a sharp corner does.)
Source files included.