Does anyone know of any alternatives to Fairy Berries that I could use? Fairy berries are small round battery operated LED lights that slowly alternate between the light being on the left and right side. They sort of look like lightning bugs/fireflies when they're turned on at night. I was thinking about using them in my centerpieces since they are watertight and they float. But they're super expensive $18 for a set of 10. I would need probably 4-5 per centerpiece. And I have about 25 tables for my reception. Any alternaive ideas that would give a lightning bug/firefly effect?