Based on where I have my HomePod Mini speakers on my desk, it can be very hard to see where the volume controls are even when the screen is somewhat illuminated.  This hat just sits on top of the speaker to better indicate the control locations.  Simply align the +/- signs on the hat with the controls on the top of the HomePod Mini.  Small spikes have been added to help hold it in place but is not intended to be permanently attached.  

This is a multi-color print and I recommend using a .4mm nozzle and at most a .2mm layer height due to the small details.  Print in highly contrasting colors for best results

.step file provided for remixes.