To save money (topical at the minute), I've started doing my own waxing and am delighted that it is going so well. Not sure why I've been paying for it and quite a lot of money too.
I've started doing my own nails. Not gels, although I removed them myself with some special removed stuff, (the whole bottle was cheaper than one removal at my salon). I'm just doing mine with normal nail polish with a good top coat and it is lasting fine. Doing my own cuticle work as well with pusher and cuticle remover liquid.
The only thing I'm going to not do myself is pedicures when summer rolls around. I hate doing my own feet!
Also cutting down a lot on hair stuff. No more colouring. Just a trim every few-6 months