Using a peeler, shave your Persian cucumber lengthwise into thin slices. Stop when you reach the seeds on one side and flip the cucumber and continue peeling the other side. Then do the 2 narrow sides as well.
In a bowl, toss together shaved cucumber with carrot, Hemp Hearts and rice wine vinegar.
Mash ½ avocado onto toast then top with shaved cucumber mixture.
Sprinkle with more Hemp Hearts and furikake to garnish.