Cardboard Tubing

 

Do not use cardboard tubing from paper towel rolls, toilet paper rolls, or gift-wrapping paper rolls for toys!

 

Although they look like they would make good tunnel toys, most of these tubes (98 to 99 percent) are made from recycle materials and may contain ink residues or other contaminants. Also, some of the glues used to make the cardboard tubes may contain toxins