A.L.
You have to order them online - no one in our area keeps a good/varied supply of them on hand. I do NOT reccomend Sugar Craft - everything they send me is packaged badly and damaged when I receive it. Some good sites are "Into the Oven", "Global Sugar Art", "CalJava", and (my favorite) "Oasis Supply". Oasis isn't the fastest, but they have several different companies, including Bakery Crafts, that they are a supplier for. I only use Cakes Amore and Cake Carousel for emergencies because their markup is so much. For instance, a cupcake stand is $8.99 at CC, but I can get it online for $4.79! It is much cheaper, even with shipping, to order all of my supplies in advance via online stores.
Good Luck!