Filament Drying Dessicant Holder

This is a dessicant holder that fits into the bottom of Big W Basics Cereal Boxes (3.8L version)

Filament rolls fit nicely into these containers.

Endcap snaps on and holds itself closed. Tweak to achieve this effect if required

These can fit an excessive amount of dessicant but work well with just a fraction of it's capacity.