Hi,
Unless you have specifically set up a nonprofit organization/fund, you did not recieve a charitable donation, you received a gift. There is such a thing as a gift tax. However, it's the person giving the gift who pays this tax, and wouldn't apply unless the giver gave you more than $13,000 in a year. Many times people have fundraiser benefits for someone who is experiencing a health or other crisis. These don't automatically become charities. There are specific legal and tax criteria that must be met. Unless someone established a charitible trust for you, or you raised money under an umbrella organization such as COTA, Salvation Army, etc., it sounds like this would just be a flat out gift. So, whoever is giving you the money would also not be able to deduct it as a charitable donation.