It's not the prettiest product on the shelf, but Vaseline is a household staple for good reason. You've probably used it to soften your lips, heal cracked skin, or soothe a rash. There's another usage it has, though, which could potentially save you lots of money down the road; it can be used as a perfume maximizer. Apply a small amount of Vaseline, or petroleum jelly, to your pulse points and neck, and then spritz your choice perfume on top. The scent will last much longer, which means fewer spritzes throughout the day and a longer lifespan for your bottle.
Vaseline Petroleum Jelly ($5)