Believe it or not, baby powder is a great dry shampoo. It's definitely not as fancy as Bumble and Bumble or Klorane, but it gets the job done and is super cheap. The key is to only apply a little at a time and build up until you've achieved the desired look.
Almay makes great non-comedogenic products that are also gentle on your wallet. This brow pencil comes in various colors and does a good a job as the expensive brands. Before Almay, I used the coveted Anastasia brow pencil, and switching to Almay was painless.
Believe it or not, Suave had some amazing-smelling body washes. These babies are cheap, and a pretty decent size. The only place you're missing out against fancy Bath and Body Works or Body Shop body washes is in packaging - but who really studies packaging when their eyes are covered with shower water?