Yeah, the list isn't full-proof. I got a hat from the "!" as well. But my 2 other hats I got from the party hat icon.

I had 17 tickets and with them I got 15 firework/poppers x5, 302 gralats, and a balloon hat.

In total I got 3 balloon hats, the Pug mount, about 6-7k gralats, and a ridiculous amount of fireworks and poppers.

I really wanted the noisemaker or bubble blower, but that's the way it goes. I'd prefer not to have them and have the items remain rare than for everyone to have them.