Make-up samples, perfume samples, soap and shampoo samples, samples of this, samples of that, all come in sizes good for trying and a bit of use, making them especially great when you don't want to pin yourself down to one thing.
Samples are often free. Even when they're not, they're usually a good deal, offering variety and a smorgasbord of possibilities to try out. Wear a different fragrance or a different shade of lipstick every day. Try it out with samples.