For those of you who sell these (or even those of you who buy them , how ornate do these suckers need to be in order to sell reasonably well? I'm developing my bomb line now. Was planning on 5-8 varieties. The original plan was that each one would have something visually 'special' going on (lavender would have lavender buds stuck to it, another scent might use decorative embeds, higher end bubble bomb would have a different shape, etc).. If I really need to do all this, fine and dandy- but is it necessary? Would they sell just as well if I just do simple 2 color rings? Anyway, just wondering what others have found.