We often go into the stores not needing to buy anything, but just for the satisfaction of seeing new things and wondering if we should buy it or not. When you are asking yourself this question, you should ask yourself this aswell: 1. Will I use it in a year or two? If the answer is no, you should put it back. 2. Do I really need it or am I fine without it? If you can live happily and find a cheaper/more sustainable alternative, you don't need the product. This can apply to clothes, toys, gadgets and such. By leaving that item in the store you are sending a message that the product is not needed in such a large amount, and the makers of that item will stop making it in such a large amount and they will reduce our carbon footprint.