Using the sharp knife, cut the crusts off of each slice of bread.
Using your roller, flatten your bread slices out, one-by-one, going in all directions until well-flattened.
Place spoons in each filling - serve a half-teaspoonful of Nutella or other filling in the middle of the bread; spread onto the bread with a butter knife.
Repeat with additional fillings using different knives for different combinations.
Roll up one end to the other, as tightly as you can, and press the end to seal it shut.
Heat a skillet on medium heat; melt butter into the skillet.
Roll each roll up around in the butter, until well coated.
Once browned and toasty on all sides of the roll up, immediately transfer the roll ups to the cinnamon sugar plate, and roll around in the cinnamon sugar until coated nicely.
You can choose to cut them in half or keep them whole, but let them cool a bit before serving or packing in lunch containers.