If I had two hours to kill in Jakarta, the Jalan Surabaya flea market would be at the top of the list together with art exhibitions of local artists and Kota (the old colonial city centre). Don't get discouraged when all you see is plenty of cheap luggage shops when you enter the road from the "wrong side", just keep walking until that stretch is behind you. It is a flea market with small shop-units that are open towards the road. Most are over-stocked and getting an idea of the range of goods on offer you will have to step inside. As usual for a flea market, there is plenty of rubbish but there are also always some veritable trouvailles: art, antiques, lamps, ship paraphernalia (real and replica), watches/clocks, wood carvings etc. etc. Some of the stuff sold there is genuinely old. If you go, make sure you first walk the whole stretch because you may find more than one of the same one-of-a-kind item and prices can differ not just by fractions but by factors! Drive a hard bargain.