Place columns around the pool as plant stands. Find pots that reflect the design style you are going for, such as white ceramic rose vases for a Victorian feel or water jug replicas for a Roman goddess look.
Place tabletops on columns around the swimming area for setting drinks and snacks on during a pool party. Options include rounded cut glass to keep things airy, painted hardwood to match your home's trim or a mosaic design incorporating all the colors of your landscape.
Set candleholders with lit candles to create a romantic evening setting. Employ glass bowls filled with water and floating candles or cut crystal holders to display insect-repelling citronella candles.
Put solar lights on the columns lining the outside of your pool area. This is a decorative way to keep things safer if swimming at night.
Use larger columns around pools to separate areas in the outdoor space. For example, section off a dining area or hang fabric from the columns to create your own personal cabana.
Bring in outdoor furniture and landscaping decorations that contain column details to keep the look flowing around the pool. For example, outdoor fireplaces with matching columns on their surround or a patio table with legs which look like columns.
Add accessories that reflect the spirit of the theme you are designing. For example, Roman goddesses water fountains or a Victorian trellis around your flower garden.