Have a look at all posted ready-made lamps...
Idea: Nir Meiri, Tel Aviv, Israel
Pendant made out of 19 small plant cups, 38 droppers (used at irrigation systems) 19 pieces of small water pipes, 19 small halogen light socket, 19 x 10 Watt halogen light bulbs
Put droppers on both ends of the water pipe pieces. Cut hole in plant cup. Put wire - coming out of the socket - through the plant cup and water pipe. Do this 19 times, make a bunch with the 19 lamps. The "bunch" is not directly connected with electrical connection at the ceiling but hang at a board suspended from the ceiling. Behind the board a transformer has been hidden.