Updated version of my chicken tractor bracket - less plastic and adds weeping holes so that any water can drain out.
Designed to use a mixture of 1.5" #10 deck screws and longer 3.5" #8 deck screws. The weight of the prop rests directly on a deck screw.
I printed in PETG with supports (keeping the cup level, see the screenshot).
The author hasn't provided the model origin yet.