This is a simple headphone stand adopted from a iMac Base with an additional platform to hold various over-ear headphones.
I created 3 different versions:
V11 - 1 part, solid
V11a - 2 parts, solid
V11b - 2 parts, with cutouts for additional weights
I printed Version V11b with some steel plates and bricks from tire balancing inside. After painting with eloxal silver the part has a weight of about 530g and stands very stable.