Pebbles: To keep heavy flowers from toppling a light vase, weigh it down with pebbles, marbles, or beach glass. Slim oval vase, $10, the Great indoors, www.thegreatindoors.com for store information.

Tape grid: If you don't have enough blooms to fill a wide vase, crisscross tape over the opening, leaving 1/4 to 1/2 inch between strips. Wrap tape around the sides of the container to keep the grid in place. This method's drawback? Changing the water is tricky. Hurricane vase, $30, the Great Indoors.