Using the Konami code (up up down down left right left right b a start) you can spawn in a medkit from hl2 on the orange box console version : r/Portal
This happened to me whilst playing the xbox 360 orange box version of portal (ignore all the other stuff the actual thing is near the end) : r/Portal
Orange Box: Cheat Codes - YouTube
Xbox360 Portal 2 Japan | eBay
Portal 2 Codes, Cheats and Tips List (PC, Mac, Xbox 360) - Video Games Blogger
Portal 2 Cheats For PC Xbox 360 Macintosh PlayStation 3 Linux - GameSpot