Portal Bookends Take these bookends, they’ll hold the books up. Why yes, they do look exactly like a test subject going through a portal on one side and out the portal on the other. Pretty clever, isn’t it? Sold on Think Geek. Portal 2, Idea Portal, Game Portal, Home Decor Accessories, Decorative Accessories, Deco Gamer, Aperture Science, Book Holders, Shelf Holders