One a day

You know that card game called Freecell that comes with Windows? I play that a hell of a lot while I'm doing PhD writing (though I can't now that my new computer doesn't have it. Probably a good thing).

Whenever you win a game, it displays an image of the King from the deck of cards. I though it’d be a nice little touch if, instead just having that one ‘winning image’, it has a different one for each day of the year. So there’s a specific image for 19 October, and you only get to see it if you win on that day. That might add a little extra incentive to play it.

You could apply the same idea to pretty much any webpage or program where people are likely to read/use it over and over. For example: the user brings up the form, and on it they see a nice photo for this day. Clearly, nothing earth shattering, but might be nice little touch.