A simple version of a spatula holder that you can pun in between the rails of the standard 3D printer.

I use it in my Ender 3 Max, it prints in less than 20 minutes and holds quite well!!!

Use it and sell it as you like

No supports needed unless your printer cannot do bridges, however you might want to print it at a slower pace than usual to get a good build.

20% infill works great!