Using floss is a genius idea… combined with this article.

I don’t have the fishing line available (need to order it but that means days of wait), so I need a quick way to fix it (at least for short term).

Floss won’t work for the more authentic repair way (tightening without tying a knot), but it works well here as I have floss at home!

(yes a long term better fix is what HIK mentioned, but it requires a good measure of the thickness of the hole / string to ensure a tight fit)