Roll up pieces to use as beads for bracelets and necklaces - these usually end up really pretty.
One thing I'm wanting to do (just havent yet) is take a square (or I guess you could use any shape) paper punch (I have a 1 x 1 inch one) and punch out pretty patterns or colors and then glue them onto a board, mat it and then frame it. I think it would look really pretty.