This is my first ever design! I would get frustrated trying to use the flimsy piece of tape used to secure the nozzle for spraycans over and over; it gets dirty and loses its adhesiveness and eventually the nozzle can come loose and get lost in the workshop.
My design is very simple and secures the nozzle in a slot and then attaches to the can using a 8x3mm neodymium magnet. Simply use a drop of superglue to hold the magnet in the hole.
I tested this using two different cans, WD40 and an air duster, both were approximately 52mm in diameter
The author hasn't provided the model origin yet.