Cardboard for gerbils (Parkdale WV1)

Hi there! I am looking for clean, thin household cardboard to use as chewing and boredom-relief material for my eight rescue gerbils. It makes a huge difference to their mental health as they need a lot of stimulation/enrichment. I am looking for items like empty cereal boxes, toilet roll tubes, kitchen towel rolls, egg cartons, chocolate boxes, biscuit boxes (eg Ritz) etc. If you work in a place that throws a lot of this away, or if you have a large pile at home, I would love to take it off your hands. Please note: The cardboard must be clean, dry, and free from plastic and strong chemical smells. Thank you so much for your help!