How about a helium balloon for each year you have been together. Attach a brief note to each one explaining why you love him so and to the final balloon a long love letter.

Or, how about a trail of Hersey Kisses from the door he typicaly enters when he arrives home to a distant room in your house where you have set up a nice picnic dinner or pitched a tent for some fun time indoors if the weather is not cooperating.

Or how about recreating your first date - return to the spot you met and do the date all over again and have fun!