Five Below, a nationwide chain known for selling seasonal and trendy items, is opening its new 480 Stillwater Ave., Bangor, store at 10 a.m. Sunday. The shops have a target audience of “the kid in all of us,” with most items priced between $1 and $5, along with some “extreme value” items priced above $5. The store is designed to give shoppers a “treasure-hunt-style shopping experience,” according to the company’s press kit. This will bring to fi…