Ideas for feeding a toddler at the table?

My daughter is just ready to eat at the table instead of in her high chair. The only problem is, I love my pretty wood table and don't want her to mash food into the tabletop! She's 13 months old, so too young to NOT pull a tablecloth off or sling a placemat onto the floor (with food all over it, no doubt...). Does anyone know of a kids placemat that suctions onto the table or something? Other ideas?