If you have a badge at SXSW, you'll get a canvas tote bag full of stuff. It's not on the 'gift bag' level of events like the Oscars, however. Instead of cellphones and jewelry, SXSW's bags contain a log of magazines, promotional publications, and the (very appreciated) pack of chewing gum.
Irene snapped this shot of the schwag bag room (click for larger picture). John remarked that it looked a lot like that warehouse in the final scene of 'Raiders of the Lost Ark.'