By reusing items that are already in your possession, you reduce your waste. Remember, even when something is made out of natural, recyclable materials, it will still produce waste when discarded. With this in mind, it is a good idea to own items such as reusable cups or reusable cloth/cotton pads rather than disposable ones.
A lot of the time, when you believe you need a product, it is possible that you might have something that can serve the same purpose at your house. For example, instead of buying a pen holder, you can use an old jam jar. This offers you space to get creative and even have fun with you kids — see if you can build a doll house or a space station using cardboard boxes and used kitchen rolls.