It can hold 300 ml (10 oz) of water. Height 95 mm.
To be printed in vase mode. I used 0.6 mm nozzle and 0.7 mm extrusion width. Tried only with cheap PETG and it is much more sturdy than expected. I made one larger version, but then it starts to bend under pressure.
At first it looks like it would be prone to spilling, but it has zero issues.
Added STEP file and .gcode for Prusa MINI+
The author marked this model as their own original creation.