My daughter actually had me read it to her last night (she is three) and she seemed very interested in learning how to use tools for DIY and how to cook... Get em while they're young!
And yes, comic conventions can be a huge money suck. I usually sell comics at a few each year, and I take the bus, try to stay with friends for free, and strictly limit any purchases of comics to a small budget (and then ONLY if I myself have made a big enough profit at the convention). I spent $10 on that book but the ideas I got out of it for saving money have already more than paid for it.