If you want to be fancy, take a vegetable peeler and create stripes down the sides of your cucumber. Cut your cucumbers into 3/4 inch slices. With a melon baller, remove enough of the inside to create a little cup. In a bowl, put your cream cheese, 2 tbsp of chives, your soy sauce, and onion powder and whip with an electric mixer. Once combined, spoon mixture into your cups. Top each piece with a slice of salmon, then sprinkle with chives.