Where to find little decorative bird nests?

My mom wants to decorate her christmas tree this year as a theme: cardinals with little nests. She is looking for small (she says about 4 in. diameter or so) fake bird nests, but that look realistic. She has not had any luck so far at craft stores. Know of any websites or places that have little bird nests? Thanks!
She can’t find them at Micheals!

Try Wal-Mart and AC Moores for those. I did my tree one year with red birds and I did have a few birds nests and the tree was beautiful. Other stores like Hobby Lobby might be a good place to look. I found some at Dollar Tree as well. Although it is a cheap store you can find birds and nests there. Sometimes they do look real. So try there.

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