I too, roll a lot of d6's to determine many different things. Sometimes I adjudicate "odds" in my head; other times the chances of success and failure are well known or are found on a simple chart.
This weekend, I found an app for my iPad called "Make Dice" that allows you to create custom d6's. It's awesome and it's 99 cents.
Here are some screen shots. They speak for themselves.
Here's a list of some of the dice I created
Here's the interface where you change the text on the die faces
A random roll of the dice...
...and another. :)