Call them up, or write them an email, and explain your situation. Describe your project and how it will impact the community. Tell them that it is all community service and any donation is tax deductible (make sure to follow up with this part ASAP if thatu2019s what they want). Maybe even offer to meet in person with them to show them the work youu2019ve done so far, or to show them where the project will take place. You could offer them free advertisement, too. For example, if you write thank you letters to your donors, or if you hand out flyers for your project, you could include a short message showing their logo and detailing how great their services are. Many companies, when given a professional presentation, are willing to help out.