There are 100,000's of options to choose from, select a charity that you are already familiar with by typing their name into the search bar, or find charities that support causes that are important to you by typing a keyword(s) into the search bar. i.e. food bank, youth, education, environment.
Either way the search feature will provide you with the best matches available, select the charity you wish to support click the donate button and follow the instructions.