You can use many different methods to spin an orb. JanLeonardo Wöllert for example uses a long planting rod. So you can spin very slowly instead of high speed spinning with a row or a cable. But there is one big problem with the long planting rod - the length! Sometimes it is not very easy to transport the rods in a car. So we decided to modify the system - we wanted a modular, pluggable version with a large number of additional light tools.
Normally the rod has a length of 2 meters. You put a flashlight with a diffusor on the one side and a counterweight (e.g. some old batteries) on the other. For the modular version you need two thin plantings rods (0.90-1.2 m) and a thicker one (normally 2m). Cut the thicker one into a piece of 42 cm, now used as the middle part of the performance stick. Then you can plug the thinner ones into the middle part. Take a marker and make a mark on the thinner ones with a length of 21cm (2 x 21cm = 42cm) and also a mark the center of the middle part with some tape. Take some tape and wind it around the 21cm mark of the thinner sticks so that you can put them into the middle part (but not too much tape, you have to remove the sticks again...).
So this is the modular principle - a middle part and two thin sticks which you can easily stick together for spinning: