@croydon - You have to pick your variety carefully if you want to both eat them and to use them for crafts. Often they are bred to be useful for one or the other, but rarely both.
And, if you're going to grow them for the gourds, you also have to be aware that they are going to take up a fair bit of space in the garden. I don't want to discourage people, but most of the time space in the garden is at a premium and if something isn't producing food, or getting to that point, I don't tend to want to keep it around.
It's just a few things to keep in mind although I'm sure squash growers can use techniques to maximize their garden space.