This is basically a 25x25 cube with a key ring attachment at the top and some basic printing refinements. A Demo one with a bad joke is one of the STL’s whilst the other STL and the STEP are blank versions of this. The original idea was a “ICE” (In case of emergency) Cube to go on keys with the ability to just add your wanted text In Prusaslicer, STEP, Creality Print or others. This is an idea I still like but realise it’s not particularly suitable. This is fine to be used for whatever you really want I am using it for a cringe dad joke.
“ I’m not Square…………….. I’m more of a Cube.”

Printed at 3x3x3 with 15% infill at 0.2 Layer height.

***Updates:

V1.1
Updated key ring mount to make it more solid and reliable for easy printing and longer-term survivability on key ring.

V1.2 
Updated key ring mount further including more spacing and modifications of the connection between the cube and the key ring loop. Cleaned up some facets and reduced some unnecessary complexity.