Here are some great materials that can be easily repurposed for so many things: Cereal Boxes, toilet paper rolls, paper towel rolls, all boxes, plastic wraps, corks, jars, containers (We are all becoming our grandmother right now- wash out those mayonnaise and peanut butter containers!). These are great for activities and for storing all your new materials- no need to spend a lot of money on containers, and these types of materials.