My wife mentioned she'd like a hanger for her SUV to use with a purse or bag so I surprised her by designing this model (she liked it so points scored!). Unlike Amazon products this one attaches securely and can't fall or slip off the seat. It has a hole dimensioned to fit a standard headrest rod. Simply lift up the headrest, slide the hanger through the rod and push the headrest back down. See the photos.
I decided I wanted to put one in my car also for use on road trips. I noticed my seat was not as thick as her SUV's so I've uploaded two sizes (lengths). 80mm fits her SUV well and the 70mm version is perfect for my car. The hole for the headrest rod is 15mm which is large enough for all the vehicles I tried.
I printed this in Prusament Clear PETG. PETG for strength and to stand up to summer heat and UV and the Clear filament to avoid potential color transfer to the seats (ours both have tan interiors). I used 4 perimeters as well to help with strength.
The author marked this model as their own original creation.