free art supplies
these recycled items are easy to find.

feathers
old socks
buttons
spools
jar lids
plastic jars
beans
rice
cereal
macaroni
plastic tubs & lids
corks
cardboard tubes
grocery trays
cardboard
styrofoam trays, peanuts, balls
egg cartons
berry baskets
boxes
cans
popsicle sticks
beads
rocks
straws
toothpicks
stir sticks
old jewelry
old toys
pipe cleaners
rubber bands
wallpaper sample books
string, twine
shoelaces
paper bags
foil inside of potato chip bags
paper plates & cups
plastic silverware
newspaper
magazines
ribbon & bows
yarn
paper, wrapping, tissue, copy, construction, etc.
milk & cream cartons
cotton
material scraps, especially different textures
wood scraps
old candles, paraffin, beeswax
sea shells
old dress up clothes
shoe boxes
combs & hair clips
pebbles

taken from:

montessorimom.com