You can donate the following crypto currencies: Bitcoin, Bitcoin Cash, Ethereum, Dai, Litecoin, USDCoin

IRS tax guidelines for donors of crypto currencies:

Your charitable contribution deduction is generally equal to the fair market value of the virtual currency at the time of the donation if you have held the virtual currency for more than one year. If you have held the virtual currency for one year or less at the time of the donation, your deduction is the lesser of your basis in the virtual currency or the virtual currency’s fair market value at the time of the contribution.

More info: https://www.irs.gov/individuals/international-taxpayers/frequently-asked-questions-on-virtual-currency-transactions