I used this during Summer camp this year and it worked pretty well. It's a fake passport that the students get stamped at the beginning of each day, if they attend every day of the camp they get a prize at the end. In the back they write their name, date of birth, favourite animal etc... and draw a picture of themselves.
We had them also write their name in big letters on the blank back of the passport and wear it around their neck as a name tag.
They require a bit of effort to make, but it's more tedious than complicated.