Hey, I just wanted to mention that http://www.firegrantshelp.com/ has proven to be a pretty good resource for finding grants and other funding sources. The grants search is free, and if there's a type of product that you want that's listed on there you can fill out a form for grant assistance for it and they'll do a more in-depth search for funding sources for you that will return more than just the general grant search does. They also tell you how likely they think it is that you can get each one they find and will give you input on how to apply for it successfully. That's all free, as well, since the form is for a specific product that's being sponsored by a vendor who pays for it all. I think the only thing you'd have to pay for is if you need to hire them to write the grant application for you.
Good luck and stay safe!