Just so you know this requires the same steps for all three inventions thats why theyre all grouped up like this.
a paper hackysack is just the paper made into a cube that you can kick just like a hackey sack
a paper water balloon ins the same thing as the paper hackysack, but yes it holds water biggrin
and heres the paper buddy
http://nujumkey.deviantart.com/art/faces-275598831
well buddy's. actually you could still fill one with water and chuck him at someone but they would explode sad .