I can't find any mention of my hats, now the Winter Bash has ended. Is there a way to look at them, like an old box of souvenirs?
Check the second question in here.
What happens after January 8th?
After January 8th, the sites go back to normal and all hats disappear. This is meant to be a fun end-of-year celebration, not a permanent addition to the site.
This means that the hats are gone. They were here just for fun.
I'm waiting for a blog post explaining all the secret hats and some general statistics, like the ones from 2016 but your own stats are gone forever.
You can still check the hats you got in here but I'm not sure for how long will this be available.
Here is the blog post explaining all the secret hats and some statistics.