This Item's Secret Feature Will Transform Your Life

4. Post-it Notes

Best places to buy: Dollar Tree, Dollar General. Average product price: $1 per pack. Post-It Notes are a staple, but most peel them from the bottom up for convenience. Turns out, that's not the ideal way to do it.

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Post-it Notes ©Siyanight/Shutterstock. Peeling from the bottom curls the note and weakens its stick. Instead, peel from the side to keep it flat and adhesive strong, ensuring it sticks wherever you place it.