E.M.
You can nest two sizes of cylinder vases inside each other. Put candy between the two vases, water inside the smaller one. Flowers get water, candy stays dry! On each table you could do a couple of different shapes- a taller vase filled with jelly beans and a few stems of bright gerbera daisies, a lower cylinder or bubble bowl with hard candy and a few bright lilies, a square vase with nerds and a few roses cut short to the vase. I would do 3 gerbs, 1-3 lilies, 1-4 roses on each table, depending on the size of the vase. Don't bother with greenery. To add a cute candy touch to the flowers you could wrap a spiral of bright aluminum florist's wire up the stem of the gerbs in hot pink or a similar color. You can find a lot of basic vases at the dollar store and the wire you can find at your local florist or a craft shop like Michael's.