Didn't want to buy one off AMZN and this seemed pretty simple, itll save you $40.

The holes are designed for smallrig bolts with a 3mm inset (1/4 20 *the standard camera bolts) but you can fit others in there as well or customize it to your preference.

Printer - Ender 3 S1 Pro (PLA)

Infill - 20%

Supports - Yes, BUT only touching the baseplate. Or else it'll fill the bottom hole.