Bring fairy lights free of knots over the year

I know Christmas is over and that's where it starts! My children could not part with their fairy lights.

For years I had the problem again and again, over the year, the brownies were probably there and have knotted the whole estate. Every time I decided, next time they come right back in the pack. Only I never got her back in there!

Now I have a very simple solution: Halve fairy lights (no, do not cut them up or something), but in such a way that it's always best to have two lights facing each other and then wrap them around an empty kitchen roll!

So I am doing it now for 3 years without problems.