If you don’t mind getting your hands wet…
Host a doggie (or pet) wash for people that will pay to have you (and any friends you enlist) to bathe their pet. Advertise with signs and posters around your neighborhood or approach your neighbors that have pets. Be sure you explain why you are fundraising, your motivations to study abroad and details about AFS. Wash and dry the pets. Be sure to think through your plan for collecting the donations (Will you collect before or after you wash a person’s pet? Is your tip jar in a visible location?).