Oranges, sweet scents and flowers that look like landing strips...I'd say lilies would be a great choice for centerpieces if you want them to stick around. This is an amazing fun thing to do...If it is cool take the butterflies to a slightly warmer spot to wake them up a bit before the release. L they will be more active if it is warm....Enjoy.! Sue of Hobart's Fine Florals http://www.hobartsfineflorals.com