To get started for any party or get together pick a theme and or just a color scheme and go from there.
Shop what you own first. Who knows, maybe that Christmas or birthday gift you are storing in the closet that you never used will be the perfect accent for a tablescape. Figurines, picture frames, trinket boxes can all be used to highlight the theme.
Need flowers or a touch of nature? Before calling the florist, look in your own backyard. Lilacs, hydrangeas, roses or any greenery and pine cones may be all you need to perk up a centerpiece. Even vegetables and fruits. A bowl of lemons or artichokes are a great centerpiece.