I just recently got my LLC and I'm trying to get donations...?

I just recently got my LLC and I'm trying to get donations so that I don't have to worry about paying off investors but I wanted to offer the people that donate some kind of tax write off for their donation. Is there a tax write off I can off in exchange for donations? If so what kind of tax write off would it be? and up to how much can I offer per person and all together?