My wife picked up a set of these silicon pot scrubbers and all the trays we had were too small. So out comes the #D printer to the rescue.
Just took measurements off the sponge and gave some extra room around it.
Using PLA - worked out great. Haven't had any issues with the water. Not really concerned about food safety as it's used with soap for scrubbing only. Items do get proper cleaning afterwards.
Print as is. No supports or rafts. I printed this in 0.2mm layer height and its water tight.