Christopher Taylor reminds us of the uses of other Urticaceae:
One thing I discovered a while ago when looking up ramie was that nettles themselves (Urtica) contain fibre that can be used in weaving. Nettle fibre isn’t used so much currently because, to be honest, it’s kind of rubbish, but it did have a usage spike in Britain during World War II when better-quality materials such as linen were in short supply.
The multifarious uses of nettles, as coincidence would have it, Jeremy nibbled about only a few days ago.