My wife and I only use stainless steel and cast iron for cookware and having a stainless steel sponge for our cookware and regular sponge for glasses and ceramic cups, we always had two sponges sitting around the sink.
I figured having a compact holder for both sponges and drains water and debris easily into the sink would be convenient and keep the sponges from sitting in the sink.
I made the holder/center divider lift out easily for easy cleaning and easy assembly.
Doesn't take long to print.
I printed my holder in the screenshots with very limited supports on the bottom because of the lip that angles into the sink and the over hang for the drain.
I also have small indents on the bottom that fit the small cabinet rubber bumpers that you can get on amazon so drawers and cabinet doors do not slam.
They work great to keep it from sliding around on the countertop.
The author marked this model as their own original creation.