I happened to have one light that still lit, but had no liquid left inside, and one like that had liquid with a burnt out bulb. I decided to see if I could make one working light out of the 2 broken bulbs.
This is how the bulbs are supposed to look:
Step 1: Burnt Out Bubblers
Another bulb burnt out, and could probably be replaced, but the base of the bulb is fused into the plastic housing and I don't want to put it back together if its going to wiggle or wobble at all.