The document provides 21 tips for nonprofit organizations to engage donors and supporters. The tips encourage organizations to share their passion and story through various media, demonstrate the impact of donations, maintain a presence on multiple social media platforms, ensure supporters are on the correct mailing lists for their interests, provide ways for supporters to get involved beyond just donations, make the donation process easy, offer various levels of membership and sponsorship, provide updates on how funds are used, ask for supporter opinions, build personal relationships, and utilize digital tools like email, apps, and videos. The document recommends books on nonprofit marketing and provides contact information for marketing consulting services.