I make a really unique wedding unity candle, I think it's probably the coolest out there...I can say that because it wasn't my design. :-) Someone used to make them for a wedding seminar group and I have inherited the job!
There's a ton of work involved in them, but it is well worth it for the finished candle. They are quite large and beautiful! If you know someone who is getting married they might enjoy it...
Here's what they look like...each individual candle is lit, then put together with the sleeve that slips over them. Kind of a good marriage analogy, the sum of the two parts being bigger than the individuals themselves! :-)
Here's a place to look at more action pics ;-) of them...