More to explore:
Portal cross stitch
Companion cube lamp shade Probability would actually do this: .2
To help put your problems into perspective, Portal 2!
Airbrushed Portal mural in a Las Vegas office - the concrete wall is paint, too.
It also says you were adopted.
You Taught Me a Valuable Lesson
I'm Different - Portal - Poster - 13X19. $20.00, via Etsy.
haha... I know what this is from!
Throwing Science at the wall!
Portal 'Companion Cube' Ice Cube Tray! :D