Mini filament holder for Flashforge Dreamer

When you buy some filaments, especially pricier ones that come in smaller quantities, they sometimes come without a spool. Some spools are too large to fit inside on the filament mount - and once you've used a good chunk of it, still having a giant honking spool is an annoyance. I wanted a spool that was easy and fairly quick to load and which would store compactly (my Dreamer lives on my sailboat - and space is always at a premium on boats).

This spool is built to hang on the internal spool