If you are good with animals…
Depending on the type of pets you feel comfortable around, design a flyer that advertises your availability to pet sit for friends, family or neighbors when they are out of town for a day, weekend or extended vacation. Sit down with your parents and create a list of people you will target with your advertising and how much you will charge. Post your signs and posters around your neighborhood or approach the neighbors you know have pets and travel a lot. You could also email an electronic version of your poster to a bunch of your contacts. Be sure you explain why you are fundraising, your motivations to study abroad and details about AFS.