A snack box that can be worn around the neck, with an adjustable angle and two compartments: the upper layer holds sunflower seeds, while the lower layer collects the shells. It’s incredibly convenient—just tilt your head to spit the shells right into the box, eliminating the need to sweep.

I used a single 4 mm Teflon tube, about 50 cm long, though you can extend it further if needed. I secured it using self-tapping screws (there’s a pre-drilled 4 mm hole in this holder), or alternatively, I trimmed about 10 mm of the Teflon coating from the end with a utility knife and glued it inside. I initially considered printing a custom part, but it ended up being a bit uncomfortable against my neck…

Once the Teflon tube is installed, you can attach it to the box. The side with the groove faces inward, and there are ten adjustable angles. After setting the desired angle, simply tighten the screw to secure it.