Chrismas light storage

Don’t you hate it when chrismas lights get tangled? This works rather nicely to keep them tangle free. I have a whole pile of empty spools and now I have a use for them!
(Added a file from https://cults3d.com/en/3d-model/tool/carrete-para-filamento-1kg-trianprogress so you can print a spool ???!)