Just in on the comments - here's an interesting not-for-profit that sends used sails to fishing villages in Haiti, Sails for Sustenance.
Shopping for a new suit of sails, and wondering what to do with your used sails? This seems like a good way to do some good with them.
I suspect that with the current crisis, cash donations to relief organizations like Doctors Without Borders would probably be more crucial, but this seems like a really nice idea for people of the sailor persuasion to keep in mind down the road - and this blog has been around long enough that it seems to do well in Google searches, so I'm posting this in hopes that down the road, people googling "Old sails", "Recycling old sails", "Getting rid of old sails", "Donating old sails" may stumble across this.
(and here's a good video for a dreary day in January)