I have 3 beautiful circles of pastel coloured dryer lint from hand-dyed mohair.

I've kept them for years in my box of miscellaneous embroidery/craft stuff cos they were too beautiful to throw out, & finally took them out yesterday to ponder over & finally do something with.

Mohair is not cotton (tho the backing is), it's goat hair, but then modern dryer lint is probably not cotton either, most of it would be nasty modern fibres created from all kinds of weird stuff.

I've never thought of saving the normal weekly dryer lint, and I don't think I will now, unless I get some as pretty as my mohair lint.

sandra