Victorinox paring knife organizer

Outer length is 23 cm so this will not fit the Prusa MINI. But you can simply cut it by rotating it 90 ° on the Z axis, then slice it somewhere across the indentation, and place the two pieces again facing the bottoms down. Sand down the edges and glue them together with instant glue.

I printed it in some old unknown PLA with 0.25 mm layer height.