They have no head, so they can scootch right down in the cushion and you'll never see it again.
An experienced seamstress could have told me about needle books - little fabric books with felt pages to store your needles. I had to learn the hard way, on the cold streets of the Internet, after I murdered two tomato pin cushions to get all my needles back out of their innards.
I gathered some scrap fabric and trim, and made this little cutie. I found a vintage button to put on it, and I just love it. I kind of wish I had made it into a wallet!