Well know you can give for free.
This was brought to my attention by my friend who also has a blog channel: http://ultimate--katy.blogspot.co.uk/ that you can give something for nothing which can make a big change in someones life and this sites called the greater good .
http://greatergood.com/ : website address

On the page there will be a button to donate to the charity on the day and today the 20th December it was to donate to Provide 24 Days of Vital Therapy for Children With Autism.
This is completely free so don't worry about putting your bank details down all you need to do is to press a button every day to help contribute towards helping people every day and the charity changes everyday. This will only take 5 seconds of your time and its quick and simple :)