Haircuts: I grew my hair super-long, it's hip length now. This sounds counterintuitive, but very long hair doesn't need washing nearly as often as short hair. I trim out some split ends about once a month, and it gets washed once a week with shampoo (recipe below) and rinsed with apple cider vinegar. The rest of the week it is kept in a braid or a bun, slicked down with aloe vera gel mixed with almond oil and perfume oil. It's much MUCH cheaper than getting regular haircuts and using fancy-shmancy hair products, it looks very professional (OK, a little librarian-ish, but there's nothing wrong with that), and it takes about 5 minutes to braid in the morning. 
shampoo
1/3 bar homemade soap, grated fine
2 tbsp. aloe leaf puree (from aloe plant in kitchen)
1 cup strong rosemary tea (other herbs probably work fine, I just like the smell of rosemary)
1 big pinch benzoin gum (preservative, although grapefruit seed extract, a smashed-up zinc vitamin tablet, etc. probably work OK too)
1 tbsp. agar (vegetarian jello substitute from the Asian market--thickener, you can use hydroxyethylcellulose from the soap suppliers if you prefer)
1 c. water
Dissolve the soap in the hot herb tea. Add the aloe gel and mix till blended. Mix the agar into the water and microwave until the agar melts, about 1 minute. Watch carefully, as the agar will boil quickly. Pour the melted agar mix into the soap/tea mix and swirl until blended. Add the benzoin or preservative of choice and mix til dissolved. Let cool and store in the decorative bottle of choice. Makes 1 pint, enough for at least 2 months. Costs about $1/pint to make.
Other stuff: Soda is really bad for you. It wrecks your bones and your teeth, nasty stuff, and then it's expensive too. Much cheaper and healthier is iced tea. Yes, I am a sick sick Northern Yankee and I drink my iced tea unsweetened, but it's still cheaper to drink homemade tea. Especially herb tea from mint that's grown in your own yard. Only red meat we eat is venison, because a $100 hunting license with all the various tags and stamps works out to about $0.30/lb in deer meat. Fishing license costs about $30 and works out to about $0.75/fish over the season.