Fresh flowers Flowers bring a tabletop to life, and often the simpler the arrangement, the better. A jug of seasonal flowers makes any table more inviting and 'dressed up'. If the flowers and scented, remove them before you sit down to eat, and keep displays low so guests can talk across the table.
Choose your own cutlery Help-yourself elements on a table create an easy atmosphere at a relaxed family lunch. Instead of laying out the cutlery/flatware at each place setting, stash it in a decorative jug or bowl, or pile it on napkins at the end of the table so that guests can help themselves to whatever they need.
Single blooms If you have any snapped-off flowerheads, use them as decoration. Just a single bloom wired to the bottom of a glass will make a perfect finishing touch.
Unique place holders Rather than sticking to standard place cards, think of innovative ways to indicate where guests should sit, such as a pretty ribbon and ornamental wired butterfly tied to the back of the chair with the guest's name on it.