When you get a request for help, don’t hang up the phone just because you don’t think the organization is big enough to be relevant to you. While you can’t help everyone, it’s important to be slow to say no to a request.
Listen for those people requesting help for a good cause; screen out those who seem to be only after personal gain. Look for partnerships that could turn into long-term relationships, rather than just meeting a one-time need. Sometimes what seems like a small request from a minor customer can turn into a big opportunity.