Just a thought here guys. If you want glass egg sinkers you should be able to find a bit for drilling glass. Go out and get yourself some marbles.. They come in a wide variety of sizes. You should be able to make all the glass sliders you need. You should be able to turn out a lot of sliders at a low cost.
JerryG
Great idea!! I have a friend that works at a glass place, I'll see if he can hook it up with some drips.