Use a brim for the main body, its slender but strong.

The rest pieces are made of TPU or other rubber like filaments and just have to be plugged to the main body.

Main body alone will work too, but then its sliding aroung more while taking the bag or headset off.

I used PLA+ for the main body, it worked nice and carries my girlfriends bag with about 5kg without problems. Headsets/Headphones are not a problem at all according weight.