When looking for an easy DIY activity to do with kids, using materials that you already have around the house is a great option! Take these old or previously used materials and transform them into something new. Here we have 50+ ideas for using milk cartons, cereal boxes and all those empty toilet paper rolls and turning them into fun art projects and imaginary play props. All of the crafts here are organized by the main recycled materials — so whether you're looking for an activity with toilet paper rolls, paper towel rolls, egg cartons, cereal boxes, cardboard boxes, milk cartons, paper bags, plastic bags, or plastic bottles — you're sure to find something!