It´s possible, yes! Very easy - only by shopping with Amazon. Your donation - 0,5 % of the price - is already included.
> Just load the page "Smile Amazon": https://smile.amazon.com
> Degister with your amazon login
> Chose "Partnerschaft für Afrika" as benefitting organization (search function)
> And go shopping like always
Thank you! We will receive automatically a monthly donation from Amazon - the collected amount from your purchases!