When it comes to shopping green, it's always a good thing to look for products made from recycled materials. But when it comes to buying toilet paper, you may want to think twice about buying recycled. Recycled-content toilet paper is made from paper items like copy paper, junk mail and magazines that are shredded, pulped, de-inked and re-processed. But paper receipts -- also known as thermal receipts -- can sometimes end up in the recycling stream. These receipts are coated in the chemical bisphenol A (BPA), a known endocrine disrupter, which can end up in recycled toilet paper. To avoid BPA, look for unbleached, virgin product instead.

When you go to the beach or pool this summer, sunscreen is a must-have item. But leaving a bottle exposed to the sun can make it useless; high heat can kill the active ingredients in sunscreen, making your lotion worthless. To keep your sunscreen active, try placing it somewhere cool, like a cooler with ice. Or fill a reusable cup with cold water and place the bottle inside. And when you get home from a day of fun in the sun, store the sunscreen in a cool, dark place.

On a hot summer day, it's best to try to park your car in a shaded spot. But if this isn't possible, be sure to take with you or store personal electronics. Exposure to intense heat from the sun's rays can quickly deteriorate the lifespan of electronic items like smartphones and GPS devices. Unplug the items and place them inside glove compartments if you're away from the car for a short period of time; if you're gone for an extended time, bring them with you. Doing this one simple trick will help prolong the lifespan of these electronics.