Freshcut Paper is a company that makes pop up paper bouquet cards. I've sent quite a few over the years. This year they have mini magnets, which I think are perfectly sized for our dolls.

Regular Bouquets by angel.biezeman, on Flickr

They can stand by themselves, or go on your fridge or another place on their magnet.

Regular Bouquet by angel.biezeman, on Flickr

And for the holidays:

Holiday Bouquets by angel.biezeman, on Flickr

Holiday Bouquet by angel.biezeman, on Flickr