Prepare toppings. Slice zucchini and grill them as desired. Olive oil is a nice touch when grilling. Gently salted and peppered. Completely cooled before making sushi balls. Peel avocado skin and take pit out, and mash them. Add drops of lemon juice to avoid avocado getting brown and salt mashed avocado (just a hint). Cut smoked salmon in small pieces.

Spread Saran Wrap (or a similar product) over palm (about twice as big as your palm). Place a topping right in the middle. Place 2 tbsp of flavored rice on top, and wrap it to a size of golf ball.

FYI - Temari means Japanese traditional handballs.

FYI - Toppings are usually (traditionally) sashimi fish. But you could try anything you like - cooked meat, pickled veggies, corned beef, ham, SPAM, cooked egg etc. Try your ideas and let me what you liked!!