IDEA: Do not pressure vendors to make donations to your chosen or favorite charity.
Companies do business with vendors to do business. Urging them to give to certain charities should not be encouraged but discouraged. Every individual has their opinions of non-profit organizations so do not bring these opinions into the workplace. If you wish, brag about your company giving $50,000 to the Red Cross, or $10,000 to the local orphanage, or $ $50,000 for cancer research. Put it on your website and let everyone know you contribute. Do not force this on your vendors.