The table was set with a mini Portal gun and canisters of the orange and blue "propulsion" & "repulsion" gels from Portal 2:
[Correction: Oops, sorry, guys; these gels are NOT edible - but Brooke does have edible versions on her blog!]
Plus there were portals everywhere: painted on tunnel entrances, boxes, and even glowing mirror versions made with rope lighting!
For a party game they played pin-the-name-tag-on-the-Cave-Johnson-portrait:
And the pièce de résistance?
...that's a lie!
Yep, that "cake" is actually meatloaf. (I'm making a note here, Brooke: HUGE SUCCESS.)
Head over to Brooke's blog to see tons more pictures, and for the recipe for those gels and the meatloaf "frosting." And thanks for sharing, Brooke!