It's wonderful to be able to secure grant funds in support of your classroom projects/initiatives. Here are a couple of grant sources that are available to teachers in most areas. I have been fortunate enough to have received grants from both of these sources more than once. If you haven't already, take some time to check out the following:
donorschoose.org--Creating an account is a snap! Then simply follow the step-by-step instructions for completing a project. Your project can also be saved, so it does not need to be completed in one sitting. Feel free to view my completed projects as a sample.
Walmart Facility Giving Program--Complete a grant application online and submit it to your local Walmart and/or Sam's Club. Applications can be made to more than one facility. The grants that I've received have funded the purchase of an LCD projector and a SmartBoard. The application process is easy! I also recommend following up with the local store manager within a couple of weeks of applying to see if your application has been received at the store level.
I wish you luck in securing funds for your endeavors! All the best!