Origami boxes with photo tutorial.  Diagrams here:  http://www.duitang.com/people/mblog/64700164/detail/  Letter sized paper (8.5&quot; x 11&quot;) made a cube-ish (7cm x 7.5cm) shaped box.  A4 sized paper made a rectangular box.  Letter paper folded lengthwise made a 6.5&quot; X 2.25&quot; box.