Gear Ball

This is a way to hang your stuff while up in a tree. The hooks and figure 9 device are sized for 5mm accessory cord. You could use anything down to 2mm and still have it lock into the figure 9. If you want to use a larger cord you could scale everything up.

Print with 99+ walls and 100% infill.
Supports are needed on the hooks, but not the figure 9.