Our neighbour gave us a bag of old half-used candles and we melted them down, added some crayons for colour, and poured them into our sand and rock molds. (the wax has to be hotter than usual to stick to the sand a bit- this is not a bad tutorial)
When I was a kid (Lee's age actually) I went through a phase of being obsessed with candlemaking. I remember making sand candles, ice cube candles (also fun!), using crayons to colour them, and setting a pan of wax on fire. whoops!
These candles were a lot of fun- I'd like to try to make some with beeswax.