I had some smaller bottles that I thought would be interesting. The problem was they didn’t have enough heft to them. I really didn’t want to weigh down the bases either. After making the Cobalt Blue Lamp for my niece I wanted to try a few more filled lamps anyway, this seemed like a good opportunity. I filled them with glass marbles that I picked up around town. Since the bottles are not tinted I wasn’t going for a liquid filled effect. I was just trying to find marble colors that complimented the bottle and shade. Overall I like the look and it gives the lamps stability. I am toying with the idea of using colored sand on a future project, I’ll just have to figure out a few details.