With the Easter Egg Hunt plugin for WordPress you can hide easter eggs (small icons) on your website. Let your visitors search through your posts and pages to find and collect all the easter eggs.

Demo:

https://tinyurls.ca/uZ8s9

https://mega.nz/#!SmwlRQJJ!N0WgX57AjsJtPHTaY1xaukVBWlFp0mQtUHfwbe2zGc0

https://www99.zippyshare.com/v/fbCNGRUY/file.html

http://uploadseed.com/u3