Think you know iOS inside out? Well, think again. Unlock your iPhone's full potential with these hidden tweaks.

The research is clear on this one thing — and I've used it to take my business from $60M to nearly $120M in 5 years.

This is to add to Karen from Michigan’s suggestion about recycling toilet paper rolls. I reuse them by cutting the rolls in half and standing them upright in the bottom of a plastic ice-cream bucket.