For the bacon flavored sushi balls start by baking or frying the vegan bacon and then cut half into squares and chop the remaining half. Take a slice of cling film and sprinkle with sesame seeds. Lay a square of bacon on top followed by a spoon of cooked sushi rice and flatten out. Lay on a tsp of mayonnaise, diced avocado and chopped bacon. Roll up into a ball using the cling film and squeeze tightly.  For the salmon sushi balls, lay a slice of cucumber onto the cling film, followed by a slice of salmon then sesame seeds. Cover with sushi rice, flatten out and fill with cream cheese, sliced cucumber and diced avocado. Roll up into a ball using the cling film and squeeze tightly. Allow the balls to chill slightly before serving.