Posted:Adding some small lead weights can work, you can get them from any fishing shop and they come in shapes and sizes that can be easily attached to the cords. Ive also seen people wrap large amounts of clear sticky tape around them to add a bit of weight, this way the light still shines through also.
Posted:Have you actually tried using lead weights? I have. I strongly discourage it. If you bean yourself with even a small one, it will hurt terribly. I've tried padding them out with pipe insulation (thick, dense foam)--still very painful.
In my experience, you need to use something that will deform when it hits you: bean bags, rubber balls, that sort of thing. Otherwise your body absorbs all the force of the impact.
Posted:Yeah, I know quite a few people who have used lead weights to give their LED lightsticks some extra weight. As long as you dont make them to heavy by using to much lead it seems to work OK. Certainly doesnt hurt as much as beaning yourself with a set of beaming poi (oooouuuccchhh)