Soap and Candle Molds.com have a wide variety of molds to choose from. The nice thing about these silicone molds is that they usually pop out fairly easily.
One of the stranger ones that is new to me anyway is the little pizza mold.
The more common and comforting molds for candles are cinnamon buns. What would you scent a pizza candle with? It is still cute and I suppose it would have come in handy when I was on my doll house kick. 
That little pizza is just too cute!
That pizza is way to cute. Love the cinnie bun.