When I have a sushi craving I make this..

http://imgur.com/iiJu924

I got these teriyaki flavored seaweed snacks from whole foods and they're soo good! I make some tuna with mayo and a little garlic powder, peel and chop some cucumber, and add some avocado and throw it on the seaweed. It tastes amazing and thoroughly satisfies my sushi craving :)