I am a law school graduate. What I offer is mere information, not to be construed as forming an attorney client relationship.
You will have reporting requirements for taxes on those raffles. Companies conduct such raffles and promotions all the time to advertise and promote business.
If you want to donate to a non profit, it doesn't negate your right to raffle or make it more legal. But it is a good tax break, etc.
Check with your department of administrative services. The link is below:
http://www.state.oh.us/das/