The great thing about making candles is that you can put your personality into them.  I personally like making gel candles.  There are so many things you can add to the gel.  One thing many people like is fragrance.  You should chose a fragrance oil made specifically for making candles.  Also, you can add your favorite color. Embeds or miniatures like glass ornaments, glitter, marbles, or even wax fruit can be added as well.  Making these candles can be a fun project for you and your children, just be sure to watch them carefully, as the gel is very hot.  Wearing safety glasses and gloves is probably a good idea too.