Simple clean / dirty sliding sign for your dishwasher. Works great with single extruder / pause / change filament type of printing.
Simple print all three parts, place the 'clean' piece inside the 'dirty' piece and glue the other piece onto the 'dirty piece.
UPDATE: I've posted an update (v3). This version uses optional magnets to help the slider lock into place since I was having a problem with the slider accidentally moving when my children opened/closed the dishwasher. The magnets I used are small - just 1mm thick by 15mm diameter).
UPDATE: Also posted a full/empty v3-style design in addition to clean/dirty (by request).