Good info: "Knives, you and the law" type stuff.
Discount for training. Will the dojo do any aikido training?
Good instruction on service and storage.
legal utility and hidden knives.
Have some quality pieces (maybe your own?) from cold steel or paul chen sp that people can get an idea why they need to plop $300 for a decent blade if they want functional instead of just a mantlepiece set of cutlery.
If it's also for renfaire, have some helmets and other armor and catalogues for them to order from.
You could probably make a good profit from local 'tester' days when people get to swing at a melon for a dollar with a REAL sword.
Your local fruit stand will love you.
