Can you tie a knot in a piece of rope without letting go of the two ends?
Can you get a piece of paper out from under a bottle without touching the bottle or knocking it over?
Can you make 4 = 11 a true statement by adding one single line?
Fold a piece of cardstock that looks like a tadpole into an origami frog that really hops.
Can you make a full sentence by using only the same word four times?