Sponge holder
thingiverse
Sponge holder that reduces waste by keeping track of dirty or clean sponges. Put clean sponges in the left holder, and move older dirtier sponges to the right. This way, the dirtier sponges can still be used for floors, toilets, etc., before throwing them away. The bottom is easily removable (push the sides inward a little bit) for easy cleaning.
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