Old memos / letters
Computer paper
Used photocopy paper
Windowless envelopes
Old books
Pale coloured paper (invoices, etc.)
Newspapers
Magazines
Cardboard (Flattened)
DONT'S
Polystyrene or paper cups and plates
Yogurt cartons
Sweet / chip wrappers
Blueprint paper
Organic material
Cigarette ends
Tissues and paper towels
Plastic wrapping
Carbon paper
Post-it notes
Waxed cartons
…or anything you are not sure of
