I think the one on the left is my favourite.
To download them and make your own:
- Right click on the image, and select 'Open in a New Tab'
- When the image opens, either Save it, or Print picture.
- When printing, make sure you print it to fit on a whole page or it might turn out tiny.
- Cut around the edges, and fold down the middle. Then fold again.
- Send to all your friends!