It was obligatory to get a Russian Pepsi bottle in 1990. This was just a few years after Pepsi started selling in Russia and the famous photo of a Russian Tu-95 crewmember putting a bottle up in his window during an intercept by a U.S. fighter was in recent memory.
Souvenir pins were sold everywhere. Several of the folks in my group were exploring the market in the old fortress of Zagorsk and we looked at the prices and pulled out fistfuls of U.S. dollars, each of us buying a full set of pins, which made the babushka running the stand very happy. The ice cream stand next door similarly did very well.