UPDATE:
Added an easier print version added in response to a fellow members printing issues.
The Easy Print version has a straight 45 deg corner bevel in the handle cutouts as opposed to a radius.

Simple stackable storage box in the style of a beer crate with an open trellis bottom.
Don't forget you can scale this up or down in your slicer software to suit you needs

Prusa

I3 MK3S

No

Yes

What ever you want.

5% - 10%

Can be printed without supports if your printer handles bridging well.