This is where imagination comes in. Placing cookie sheets filled with water on the counter will give the cat a very unpleasant experience the next time she tries jumping up there. I unfortunately did this, plus filled them extra full. When my dear Eddie jumped up he hit the cookie sheet which landed on the floor along with a flood of water. He got off scot free and I spent the next 15 minutes mopping up the wreckage.
Balloons can be a festive deterrent.
Blow up a balloon and let your cat sniff it, then pop it by the side of his head. If this is done several times, the cat will soon start to detest balloons, at which time you can decorate the edges of your counter with balloons. There are several devices available commercially which may be helpful. Large plastic devices which look like mousetraps can be placed on the counter and when the cat jumps on them, the paddle will slap making a loud scary noise. If it is food that is enticing him, keep food off of the counter and put it in cupboards unless you are in the kitchen.