When the Soviet Union first fell, it was relatively easy to get your hands on Soviet relics. People were literally standing in the streets selling army hats, hammer and sickle belt buckles, and anything else communist they could get their hands upon.
These days, however, it is a bit more of a challenge to track down Soviet goods.
Thankfully the Vernisazh Market in Moscow (also known as the Izmaylovo Market) still offers up such kitsch to the discerning tourist. Opened only on the weekends, this is the place to buy that propaganda poster, Lenin stamp collection, or cassette of communist anthems.
Communism is dead, however, so expect to bargain hard.