So I’ve been looking for a case for my whistles and haven’t found anything good yet. I decided that I’d take a long piece of cloth that I used as a toga for a Halloween costume and turn it into a roll for them. Here’s the result:
I once made a similar one out of a (rather thick) keffiyeh, which turned out quite fancy and protective.
I never use it. The one or two whistles I usually have with me are simply wrapped in an old T-shirt. 