For this project, you need 2 empty rolls, scissors, tape, glue (optional), markers or crayons or paint and colored paper or yarn or other stuff to embellish:
Tape it together so that it fits snugly inside the other roll.
With a piece of tape, make a tab on the top of the taped roll. This will be your handle or control.
Now, open lift the inserted tube up more and draw a bigger mouth.