I wanted these sensors to just sit on my desk, various parts of the house etc. On a simple stand.

Printed this with three different angles: 60° for a low desk, 75° for a high shelf and 10° for hanging. All have a screw slot.

Note that print orientation may be tricky, needs support. 60° and 75° may print fine with the sensor face down. I printed the 10° variant on its side, yet it may also work if you try to print it vertically like a V with the angle down.