I have just found out that if you have a paypal account you can make a donation directly to my paypal account (I am slowly catching up to the 21st century).
To make a donation to the Sickle Cell Foundation of Tanzania and Cycle for Sickle Cell
Go into your paypal account
Choose ‘send money’
Enter my email address: firstname.lastname@example.org
Tick ‘I’m sending money to family or friends’