To increase burn time, using soy or gel wax will last far longer than regular candlewax.
Also, try having those candle mixtures poured into glass jars. Have you heard of a candle warmer? Walmart sells them for about 4 bucks. You set them on the "hotplate", and it warms the glass jar and melts the wax. That way you get all scent, no soot, no risks of fire. I love those things. You can leave them on all day, and not have to worry about it like you would with a candle that has a flame. If you make candles for the jar warmers, you can also save money by not buying wicks - because they aren't needed when you use a candle warmer. Another happy little fact is that the warmer plates extend the life of the candle, because having a candle aflame makes the wax burn up quicker. When you're doing this, you're smelling the mixture of scent/smoke- and mainly smoke. Just a suggestion. <img src="/images/graemlins/smile.gif" alt="" />