When we were in China, we discovered the lotus candle, and we bought a couple to bring home to the U.S. It's a flower that shoots off a big scream of flame, then opens (or blooms) into a flower of candles, all the while playing a high-pitched version of "Happy Birthday."
We used one for Casey's 4th birthday after we returned.
And we used one (a knock-off we bought at Albertson's) for Marcie's 4th birthday.
Then we found another one at Albertson's (they're rare, I tell ya!). Here it is at Casey's birthday party yesterday (and, in particular, I hope you enjoy Jason's commentary):