Theme of the block is "Feathered Friends" so anything along that line would be great, just small and possibly free. Thank you and hugs.

Mary Jane of Perfect Little Stitches has many sets of mini designs that stitch out very nicely.
Jo

Have a look in the miniatures at embroidery library, there are some there.

I guess I should also add that they need to be realistic looking. Little chicks, roosters would be good too.