Portal showed us that handy dandy labels can help warn your friends of potential hazards like falling cubes, holes in the floor, or cake. (If the cake is a lie, that is certainly hazardous.)
This set of coasters will not only protect your IKEA/Grandma/TaxReturn furniture from condensation disasters, but they’ll also look spiffy while doing it.
Show your love of portals, testing, companion cubes, turrets, and all things Aperture. The Portal Warning Sign Coaster set contains eight unique coasters that you can use to warn house guests of their impending doom.