Carry a poinsettia theme through your decor with homemade paper poinsettias, used as accents on a tinsel garland, gift toppers, or wreath ornaments. Stored loosely wrapped in tissue paper in a waterproof box at the end of the season, they’ll last for several holidays to come. To make a carved pumpkin last longer, soak it in a solution of 1 part vinegar to 10 parts water before you cut. Keep the top and stem intact and cut a hole at the bottom or back of the pumpkin for cleaning out and adding a light.