I am currently not working (took a sort of settlement agreement at the end of November) and am expecting a baby (through surrogacy) in March. So I have plenty of time to think (!) and I've come to the conclusion that I'd like to be doing 'something else' for work when I go back (which will likely be around summer time, as we can't afford for me to stay on maternity leave).
I drifted into my career in technical documentation after university, and while there are elements of it that I enjoy, I think I would like to try something different. And...that's as far as I've got. 
I know loads about what I don't want to do, but very little about what I do want to do. I am quite creative, but I am trying to be realistic - creative is not going to pay the bills. Is there such a thing as mid-career change advice that ideally won't cost the earth?
Any tales of successful career changes welcome, thanks.