First, know your audience. Are you in a rural area? an area of affluence that the fair will be at? Is it a theme fair? ie Pig Farmers of America fair! (ie MAKE PIGS).. follow the them, wine festival.. wine theme is a good plan for some items. Also.. the lower priced items sell faster than the expensive in my vast (all five fairs I have done) experience. People will think twice and hard on more expensive items.. less impulsive? good luck and show us what were the big sellers!