Weddingbee boards

If you want to avoid yet another task, try using Chinese take-out boxes.  You can buy them in all kinds of pretty colors and materials, including a sturdier frosted-y plastic.  Most craft stores have 'em.  I was crazy and cut out the sides and replaced them with vellum to make lanterns and the petal toss containers, but since there are such pretty "plain" see-through boxes out there, just filling 'em with petals would look beautiful w/o any effort. Also, they have a handle so it makes it easy for guests to carry them, or to hang them on a chair back.