Make waves with an arrangement set in a seashell. The trick is to fit a piece of floral foam inside the shell. Then you can tuck in stems, and they'll stay put. Here, variegated hosta leaves and frilly ferns cup a green-and-white cluster of Queen Anne's lace.You can use a seashell you already have or buy one at a crafts store.
1. Choose a large shell that sits securely -- without rocking or falling over when opening, faces upward. Begin by soaking a block of floral foam in water until saturated, usually a few minutes (the moist foam will then keep your arrangement fresh for 3 to 4 days).
2. With a sharp knife, cut the foam to fit inside the shell's opening, trimming it as necessary. Press and pack the piece of foam down into the shell; it should fill the opening to just below the lip.