What do you do with leftover reusable nappies?

[TheDuchessOfKidderminster]

I have a few leftover nappies and not sure what to do with them. We don't have a nappy library locally, otherwise I'd donate them to one.

Give them to a friend with a child still in nappies
Keep them in case a friend with baby visits and forgets to bring some
Give them to a women's shelter
Give them to a food bank (although they may only take sealed packs)
Keep them in case your potty trained child develops explosive diarrhoea and in order to get any sleep and not make said child sleep on the toilet it's easier to use an emergency nappy and change that than change pj's and bed sheets .
Keep them in case your dog develops explosive diarrhoea and a nappy seems a good solution at a desperate time.