You're going to need these officially licensed Portal Bookends.
They make great conversation starters!
Clever and functional! These officially licensed Portal Bookends not only feature test subjects going through orange and blue portals, they also really, actually, pretty much keep your books in order! The left side features half of a test subject going through an orange portal, while the right side features the other half of the test subject coming out the blue portal. Bookends make great conversation starters. Just imagine the terrific exchanges these two will inspire! Don't be the guy or gal that misses out on this slick pair of Portal Bookends. Besides, if you happen to be a test subject at Aperture Science, you're probably going to need them anyway! Bookends measure 5-inches tall x 4-inches wide x 2 1/4-inches long.