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12. Stick-On BBQ Eggs
Cost: $10-$15 to make*
Purpose: Turns eggs into a fun barbecue item
Everything is pretty much safe to throw on the barbecue, including eggs. As per Bon Appetit, you may grill eggs by placing a raw egg in its shell and cooking it for 10 minutes on the grill. Of course, you may also wrap the eggs with meat if you're feeling particularly gourmet.

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Shutterstock/Sari Sanee: Barbecued Eggs on a Stick
Remove from the grill and hard-boil eggs. Then, encircle each egg with three ounces of meat. If you want your meat-eggs to be "done," pierce them with a skewer and cook them for twenty to twenty-five minutes on the grill.
13. Really, try using eggshell toothpaste.
Cost: $0*
Purpose: Can help remineralize teeth
This tooth-strengthening tip, which may sound bizarre, involves creating toothpaste out of eggshells. However, many swear by it. Eggshells can be added to toothpaste by boiling and thoroughly cleaning them, then pulverizing them in a food processor or mortar and pestle.

(Really, really.) Try eggshell toothpaste. ©Shutterstock/Sissoupitch
Next, mix the powder with your toothpaste or toothbrush. Because eggshells are high in calcium, teeth can become stronger and remineralized. But don't believe us when we say this. Eggshell toothpastes can help re-strengthen teeth and serve as a "cost-effective treatment" for dentin hypersensitivity, according to a study published in the European Journal of Dentistry.