I prefer hats myself. Got a Chinese communist hat, a Che beret I picked up in Cuba, an East German winter hat, a Soviet cap w/sideflaps from the Afghan war, and, of course, a Soviet ushanka.
Pins are also a good and cheap way to show one's political affiliation.
I also have a soviet flag. I think the reason hammer and sickle flags outnumber black and red and black flags is because of their availability, and the fact that people will recognize them. Plus it's great for trolling Teabaggers, and reenacting Raising the Flag Over the Reichstag.
Life is beautiful. Let the future generations cleanse it of all evil, oppression and violence, and enjoy it to the full.-Leon Trotsky
A revolution without dancing is not worth having.-Emma Goldman
The revolution is not an apple that falls when it is ripe. You have to make it fall. -Che Guevara
The wise thing to do is simply to skip the bosh and twaddle and vulgarity and untruth, and get the benefit out of the rest. -Teddy Roosevelt