There are three main places to look for grant funding outside of Cornell: the US government, state government, and private foundations and corporations. While there are many resources out there for finding this funding, this guide points you to the major tool for each funding source. Federal grants=Grants.gov; NYS grants=New York State Grants Gateway; and foundations=Foundations Directory. Note that more and more recently, the Foundation Directory is indexing federal grants. In addition, GrantForward indexes both federal and private/corporate funding sources.
In addition to those 4 traditional sources of funding, you may be interested in exploring the possibilities for crowd funding.
Here are a few broader overviews of funding resources available online and in print:
Grant Forward: has a mix of funding sources: state, federal, foundation, academic, and more. Cornell subscribes to this, and you can create a free institutional account that allows you to set up a personal profile and save searches, which you can't do in Foundation Directory. There are QuickTips, CaseStudies, and a Researcher Welcome Guide, and Cornell's Office of Sponsored Programs has created a Cornell-specific guide to Grant Forward: https://www.osp.cornell.edu/Funding/Grant-Forward-Cheat-Sheet-final.pdf.
Provides one-stop shopping for anyone interested in locating grant funding opportunities with State agencies.
The Foundation Center Directory Online Professional contains information about the largest public and private foundations in the U.S. and links to foundation web sites. This edition includes full text access from more than 250,000 IRS 990 forms, 80,000 detailed funder profiles, half a million recently awarded grants, RFPs, key staff affiliations, publications, news and job postings. Free to CCE through Mann Library services.
Foundation Directory Tutorial Webinar Recording: 2012 Webinar Recording: learn how to use the FOundation Directory to find Grant Makers and Grants for your CCE programs.
For non-US grant seekers, and for those looking for grant funders outside the US, these resources may be helpful. Note--the Foundation Directory does include international funders, but not comprehensively.