Cardboard Tube Diy Ideas . Using hot glue, put glue over the second. Check out this pom pom balance paper towel roll tree activity for a creative approach to practicing fine motor skills. Cardboard Tube and Yarn Autumn Trees In The Playroom from intheplayroom.co.uk The tubes are biodegradable, so you don’t even have to worry about pulling them out of the tube. Use a fabric like felt or velvet for a luxurious feel. Find and save ideas about cardboard tube on pinterest.