A wide-mouthed, spiral nautilus shell can double as a pearlescent vase for bedroom bouquets. To create your own, place a piece of floral adhesive on a plate (use just enough to hold the shell upright). Stick the shell to the adhesive, and then place a weight -- a fishing sinker, for example -- inside to help hold it in place. Fill the shell halfway with water, and add flowers, such as purple scabiosa and white phlox. Lastly, arrange pebbles around the shell; they'll add a finishing touch and further stabilize the display.