Jewelry is great because it’s a blank canvas that allows you an infinite amount of ways to express yourself. Most people will opt for some kind of bling, sticking to the old tradition that jewelry should be a display of financial comfort, but if you don’t care about that, these 3D printed Space Invader Rings could be right up your alley. They’re made from plastic or silver, and cost anywhere between $15 and $99. Some metals include brass, bronze, steel, and silver, while plastic is plastic dammit. They’re available now.