I have been working on a new book called "Arduino LED Projects". Now I am looking for a publisher. It has a dozen projects from electronic dice, to a "wheel of prizes", to a quiz lockout machine, to a meter, and even a 8 by 8 dual color LED array. It is already listed on Amazon.com.
Here is a picture of the table of contents:
This is a peak at one of the pages:
Here is a picture of the front cover:
Here I am playing with one of the projects, a two digit meter: