Need to refresh the scent of your house? Put two caps full of vanilla extract in a mug, then place it in the oven at 300 degrees for one hour. Within twenty minutes the whole house smells like heaven. It's actually a common realtor trick.
Making Herbal Tinctures. I do this for fun, and I do it for my work as well. I make tinctures using fresh dried herbs and vodka, let it process, and sell them. I've been getting great feedback as well because they... well, work! My cough tinctures are better (and safer, and more effective) than Robitussin!