Meet with the school counselor for recommendations on what scholarships the high school senior will be eligible for. School counselors are often familiar with the specifics behind many scholarships you will come across in your search and will probably guide you in the right direction. Ask your counselor what strengths from your list of experiences can be used to your advantage and how companies or organizations will perceive your application.
Contact local charity organizations and companies that the student's parents may work for. These groups or companies may offer special services to students and would be aware of scholarships for which students can apply.
Create profiles on scholarship search engine websites and read through results. Websites such as Fastwebs.com and Scholarshipexperts.com are just a couple of the many useful scholarship/grant search engines available to students. These sites find appropriate scholarships for you by analyzing a profile that you create to register for their services. This profile will take into account your interests, grades and desired goals. Read through all of the search results and mark the ones you like as "favorite" so you can come back to them later.