Do you have a local newspaper that has a classified ads section? Maybe you could place an ad there. Does your library or any of your stores have a bulletin board on their wall? You could ask if you could put an ad there.
Free classified like craigslist , PlanetAdvert
you would have to get the appropriate insurance before you did anything with it but then how about becoming a tree surgen and chopping/trimming trees for people?
currently looking for some extra cash on the side i own a chainsaw and i thaught to my self why not offer my services to people that would like logs cut and split for fire wood but i have no idia how to ask around i live in the uk scottish borders