Cook your bacon, (I do mine in the oven) until crispy, lay out a a plate lined with a few paper towels to drain.
Spread the cream cheese, on both cut sides of the bun / rolls. Place 4 slices of the bacon on the top side of each bun / roll. Next place 2-3 tomato slices on the bottom side of each bun / roll, and put 1/2 cup of the arugula on top of the tomatoes. Layer the avocado slices on top of the arugula (if desired). Fold together and place them all on a serving platter.
Dress up each sandwich according to individual tastes. Try using a flavored cream cheese, a specialty variety of bacon, add a slice of your favorite cheese, top with a sunny side up egg, top with slices of avocado.
The possibilities are endless, have fun with this.
Explore and try new things. Try cutting each different sandwich into thin slices and trying a slice of each one.