Cat Scratching "Table"

We have an old, wooden, picnic-type table on our enclosed porch that our cats like to scratch when they are on the porch. They've carved the legs nicely just as they've carved their Natural Scratch post. They also like to sit on the table. It appeals to them enough that I am currently working on a prototype for a Natural Scratch "Table." It will have four, 3-inch square rough, white cedar legs. Customers could place the table near a window. After scratching a table leg, a cat could jump on top and take in the world going by.