The present Winter Bash started out in 2011 on Gaming Stack Exchange exclusively as "Hat Dash".
All the images of the hats that year seem to be located in a PNG file: http://hatdash.com/content/img/hats128.png. (On Gaming SE Meta, there are only images of the 6 secret hats.)
Unfortunately, the PNG file isn't archived on the Wayback Machine and the archived site of hatdash.com doesn't have the images either.
So, does anyone, who has been on SE long enough, happen to have the images of the hats used during Hat Dash? And if they're kind enough to share them in an answer? I'm just really curious to see the design of old hats.
And fun fact: at least 2 hats from Hat Dash were reused last year & this year.