My books kept falling over on my shelf so I decided to do something about it. I didn't need to make it fancy or whimsical, I just needed something functional that was easy to print. In the end, it came out pretty well. It looks nice on the shelf and above all else, prevents my books from falling over.
The bookend is 100mm tall but can be scaled to suit your needs.
Printer:
Hatchbox Alpha
Rafts:
No
Supports:
No
Resolution:
0.25mm
Infill:
20%