A simple and strong desk hook for your bag!  

Printed in PETG-GF.  A little heavy on the filament at roughly 110g .  Tested to hold 70lb [~30kg] overnight with some deflection under load.  Once the weight was removed hook returned to the original shape.  My suggestion would be to keep it under 28lbs for a conservative safety factor of 2.5.  But of course, use your own judgement.

Currently using it to keep my bookbag or roughly 15lbs off the ground with no notable deflection.