I bought most stuff 2nd hand. If you buy locally you can check the stuff if ok before buying it. I got clothes online. It's just a waste of money buying stuff new, when there is perfectly good 2nd hand stuff, they only use it for a short time, and then you're stuck with all this stuff you have to get rid of.
The amount of $ that has to be spent on medical bills, nappies, "real expenses", you won't be short of things that have to be bought/paid for. If you save by buying things second hand, you'll may be able to put that money towards music/babygym sessions, etc.