I've been continuously checking our local Salvation Army stores for cheap games (the ones I've gotten so far have been either 99 cents or $1.99) that I can turn into piano/music games. One I found last week was Chutes and Ladders.
Turning it into something musical was pretty simple-- First, I took the plastic spinner off of the spinner board (as shown below). Then I cut out a circle the same size as the circle on the spinner from a white piece of paper to cover up the numbers. I glued the paper onto the spinner board with Elmer's glue, making sure to smooth it out well. The spinner originally had only numbers 1-6, but I decided to divide it into 8 different sections. I then wrote different combinations of notes in each section.
This particular used game that I got was missing a few of the cardboard parts of the game pieces, so I used a sticky note cut in half stuck in the game piece bases. Then, I wrote the players' names on the sticky notes-- it made it easier than using the game pieces anyways since you didn't have to remember which one was yours!