When you are out picking up back-to-school supplies for your student, why don’t you pick up some things to help your marketing efforts.  If you don’t have a student, you can still get these things now and take advantage of the sales.  Here are some ideas to add to your list:

Do you offer something that someone else may need?

Does someone else offer a service or product that you need?

Consider becoming partners!

When you're building a business, it's important to work with people you trust and like.

You'll want to decide if you want to contract out work (by hiring an individual or firm) or identifying partners who agree to work with you in exchange for equity in your endeavor. You could offer something like a 1%, 10%, 40% share (or more) in your company depending on what your potential partner brings to the table.