I've never been a huge fan of the Random Happenings rules from Town Cryer, but I do like the idea behind it. I decided to take some of the ideas there, and create my own version that would use a deck of cards instead of die rolls. I used Twan van Laarhoven's Magic Set Editor to create the deck. It can be found at http://magicseteditor.sourceforge.net
I like the idea of using a deck of cards because it's fun, visual, and my gaming group consists of quite a few ex-Magic: The Gathering junkies.
My deck consists of 21 cards that have various events on them, and 21 cards that do nothing (called All is Quiet cards). If you decide to try using this deck (or making your own) feel free to adjust the amount of non-event cards to your liking.
If you want to use my deck or see an example of a deck, you can view the main event cards in a pdf here
. The `All is Quiet' non-event cards can be found in a pdf here
. The deck file for the magic set editor can be found here
. I printed out the deck on heavy cardstock paper, cut them out and put them in card sleeves. The rules for the deck, and profiles for the various creatures found inside can be found here
Just keep in mind that the rules were written for my campaign. Feel free to customize them for your own use.