Here are some ideas to dress up your own table.
1. Look at a picture of a table that you like how it was dressed up. What are the key elements that you like? Do you have something similar to those things in any area of your house?
2. Use live plants or clippings from your yard (or someone else's with their permission). House plants can be transformed just by transferring them into a new container that may work better with your dining room decor. Simple clippings like budding branches and single flowers can make great statements as well as add some color.
3. Candles. What else needs to be said? Pick different heights to make it more interesting but try to stick with the same color palette.