Even though they weren't expensive, my Mom and I still decided we would try to make our own version. I warn you, this gets very messy. Like Kindergarten-hands-covered-in-glue-and-glitter messy. Very. Messy.
Find a package of white birds in the wedding section of JoAnn's or Michael's. (Don't forget to use a 40% off coupon!)
Use spray adhesive to coat the birds, (we left the clips on and all). Then sprinkle glitter all over them. Turn them and reapply glue and glitter a million times.
You might need to scrape the beak and eyes after they dry to clear away the glitter. Touch them up with a black permanent marker. Then you have an adorable bird for your Christmas tree or a PB inspired Apothecary Jar.