Different types of paper (i.e. printer paper vs. cardstock vs. watercolor paper...)
Different sizes of paper (i.e. origami paper vs. construction paper vs. stationary/envelope)
Cardboard
Natural vs. Manmade fibers
Tight or Loose weave
Stretch or No Stretch
Perler Beads
Duct Tape
Vinyl
Shrinky Dinks
Gem Painting