As a parent, you may be looking for ways to enhance your child's learning and development at home, particularly in the fields of science, technology, engineering, and math (STEM). One great way to do this is by using recycled and reused items that you already have around the house. Not only will this save you money, but it will also teach your kids about the importance of reducing waste and using resources wisely. Here are seven ideas for using recycled and reused items to engage kids in STEM activities at home:  1.  Build a cardboard maze Cardboard boxes can be transformed into a variety of fun STEM activities. One idea is to use cardboard boxes to build a maze for your kids to navigate. This activity helps kids develop their problem-solving skills as they figure out the best route through the maze and their engineering skills as they build walls and other structures to guide a ball or other object through the maze. You can also challenge your kids to make the maze more diffic