I just got some fun vintage buttons from becali jewels on etsy.com:
I'll probably use the grey shell ones for the stripey grey sweater that I am seaming up now. I'm considering using the yellow ones for my Forecast sweater, if I ever finish it. I don't have any plans for the green ones yet. I just liked them. I wonder how long they have been attached to their card, waiting to be sewn onto something? 60 years?