I found this list that I and the magazine Marie Claire, in which I found it, won’t ask you to do to save money:
1) Don’t grow your own food. No matter how I've tried, I can't get my molten-chocolate-cake bush to thrive.
2) Never attempt an at-home spa treatment. I don’t care long your arms can reach, there is no way to get the hair off your back by yourself.
3) Don’t cancel cable. When you’re all alone, watching a Law & Order marathon with a giant bag of M&M’s is all one needs in life.
4) Don’t eat out less. By the time you’ve driven all over town for saffron for a seafood risotto, you’ve blown the eight dollars that you thought you'd save.
5) Never haggle at Hermes. The French have let us know there’s no point. They are the ones who invented the French kiss, which says, “I’m sticking my tongue out at you, even though you we’re kissing.”
6) I won't advise you to rent out a corner of your apartment to a German student, even if she says she’s sorry for hating Americans because she couldn't read and write. (To get this joke you need to see that horrible movie, The Reader.)
7) Avoid buying a “gently worn” bikini on eBay.
8) And while I'm thinking of it, don’t buy Prozac on craigslist.
9) Do not cancel Netflix and invite your friends over for an unabridged reading of The Iliad instead.
10) Don’t start a tin-foil ball. I started one after WWII and it now takes up my entire dining room and part of my butler’s pantry. I swear to god, I don’t know what the f*ck it’s for.