I get this questions a lot! How can I get started in soapmaking with spending the least amount of money? And I want to do it tomorrow! Yeah...I'm one of those people too! I get it in my head to try something and I want to do it tomorrow.
Here is a fun thread for unique ideas for molds and other soapy stuff -- like coconut oil and castor oil you can find locally. At 10% for the former and 5% of the latter, you can up the lather of your bars for very little expense.
Grocery Store Soap Challenge