Step 1: Take a sheet of scratch paper, put it into your printer and print out what you want to print on the paper scraps.
Step 2: Take the paper scraps and tape them right above the different shapes.
Step 3: Put the sheet of paper on which you just taped the paper scraps back into the printer.
Step 4: Now all you have to do is to remove the paper scraps from the sheet of scratch paper, cut them into the desired shapes and you're done!
Easy, right :)