8) The Tesseract (The Avengers)
Like the Ark of the Covenant, the Tesseract isn’t intrinsically evil, just used for the worst intentions. Able to open portals to other dimensions and remote parts of the cosmos, it’s impossible not to envision the artifact’s use in cornering the market in (figuratively and literally speaking) out-of-this-world vacations. Forget Cancun and Miami! Asgard's where spring break’s happening!