Washed ashore?

I found this on our walk but not sure what to do with it as there's no-where to hand it in.
This afternoon I visited my friend who has MND. I've been trying to see her for ages but she hasn't wanted to see me.  However today she was up for a short visit. Sadly her voice has nearly gone and we had to communicate via her alphabet board.  It breaks my heart to see her like this but I'm glad I went.  I do count my blessings.