I made this because I found other HomePod Mini wall mounts to be a little over complicated and I wanted the device to sit facing forwards so that I can see the lights and volume control. I think it looks reasonably unobtrusive, even though it has some slightly creepy Portal vibes :)
The screw holes are 3.5 mm so you'll need two M3 countersunk screws and rawlplugs to fit it to the wall.
Thank you to WayToApp for making and uploading the HomePod Mini model I used it to cut out the shape for this design. You can find their model here.