[header] How to make fire starters with old puzzle books [title] Put some wax into an empty can. [step] If you have any candles you don't want, these are an ideal source of wax (like the stub of a candle). [title] Melt the wax in the can. 
[step] You could put it on the stove in a pan of hot water, or put it in a slow cooker. Do not just warm the can straight on the top of the stove since that presents a serious fire risk from over-heated wax.