Also at night, you can see some interesting bronze pieces on Skadarska itself. It's a bit of a 'tourist trap' in that it has national restaurants, musicians and draws visitors but you'll see a few stands that might be of interest. The restaurants are actually ok and a good night out for visitors to experience, so you could do a bit of browsing before you eat.
If you like medals and military memorabilia and coins, there are also evening stands on Kalemegden. You have to weed through the 'tat' but some treasure can be found. That's only 10min walk from Skadarska and another place you are bound to visit anyway.
I thought Zemun markets were open more than just Sunday, but I'm not sure it's a big market and very good, worth checking out Zemun for a walk anyway and see, go in the morning..
For china Blok 70 in new Belgrade, and another flea market at OTC New Belgrade.
Stoofer.
Stoofer