Slippery
Materials: Soap or cooking oil on tin foil, wet ice, banana peels, lotion
Squishy
Materials: Marshmallows, water balloons, play dough, pillows.
Rough
Materials: Tree bark, sandpaper, scouring pad.
Fluffy
Materials: Cotton balls, animal fur, feathers, bubbles (bubble bath)
Smooth
Materials: Paper, tabletops, polished stones or pebbles, marbles
Bumpy
Materials: Rocks, bubble wrap, legos