What are inexpensive ways to pamper yourself?

I'm pregnant, going to school and, working part time. I'm basically broke. I want to be able to pamper myself without breaking a very very strict budget.
I have about 25 dollars a month that I can spare, what can I get? I own a lot of aroma therapy candles, bubble baths, and stuff like that but I would like something else.
I recently read that putting milk in bath water was a good way to moisturize and is very popular in spas, what else like this can I do?