When we took our DS at age 18 months we took disposible placemats. Incase you haven't seen them, they are plastic with adhesive strips on two ends to hold them to the table. This way his food was not on the table top itself. We only did this with not so messy foods like dry cereal, bread, sandwiches, dry pancakes, etc. Then when he was done we pulled it off the table and threw it away. I'm not sure if this is what you were looking for, but I hope it helps.