I needed the ability to mount things to my Car's Airvents, and everything I could find already either didn't seem strong enough, or wouldn't fit my style car vent. I made my own mount instead, and it's extremely strong, sturdy, robust, and simple to print.
20-100% (Doesn't matter a ton)
It's very important to print this part out of a material that won't warp or deform with high-heat.
My car is black and I live in the south, where it's easy for the outside temperature to reach over 90 degrees a day. The inside of the car is hot enough to burn you if you touch it. If where you live doesn't get too hot, you 'may' be able to print it without problems in PLA, but I printed mine in PETG. This part would likely work just as well in ABS if you can print that. It's a small part, and therefore warping will have minimal to no effect.
Depending on your printer accuracy, you may need to use side-cutters to split the four rounded ends apart if they print fused together. It's not a big deal, and will split easily with a little persuasion, but it's something to keep in mind.
I designed it very quickly in fusion360. I have provided the .stl , and fusion360 archive project file so you can remix the part to your liking.