Stack Exchange invites you to celebrate the end of a great year …with HATS! As you use your site, you'll discover hats and other items hidden behind certain actions. Collect all of them, some of them, or none of them, but be quick – the hats get put back in their boxes on January 3rd!

IDENTIFICATION DIVISION

earn a silver badge

The Mad Hatter

5 edits in a day with no comments

Foot of the Rainbow

earn a gold badge

Just Jesting

10 upvoted comments

Explorer

accepted answer with no votes

Too Cool

vote 7 times via app

The Milliner

collect 11 hats

Hero Of Time

ask at 7pm anywhere

Sherlock

answer own question, both +3

Taco Tuesday Any Day

five +3 answers

Werewolf Hunter

edit 5 old questions

Like Clockwork

visit on 10 consecutive days

Think!

six posts edited after your comment

Fashionable

9000 views of your questions

Silencium

answer +7 with no comments on Q or A

Brunhilde

earn 150 rep on three non-SO sites in 15 days

It’s-a me!

delete 6 comments after owner edits post

This Is Fine

delete 10 comments from 2017

I’ll Handle It

close, edit, reopen a question

Fascinator

search on 3 consecutive days

Waffles

answer question at -3, becomes +3 and answer +5

And YOU Get A Hat!

help find 20 unique hats

Extra Toppings

answer +3 a question with accepted answer