I recently picked up a Quickfire Rapid, and before I had purchased the board, I also picked up one of the Grifiti wrist pads that was talked about here on geekhack some time ago -
http://www.amazon.com/Grifiti-Keyboard-Wrist-Pad-Black/dp/B004D8PYE2/ref=sr_1_sc_1?ie=UTF8&qid=1329002049&sr=8-1-spellUnfortunately I wasn't quite satisfied with this. The main issue I had was the sharp edge, which was extremely uncomfortable on my wrists as it basically dug into them as I was typing or gaming on my new keyboard. It also seemed a bit too high for my liking and cutting it to size wasn't really much of an option.
I came up with my own solution which I thought I'd share below:
The first thing I did was purchase a large office depot branded extra large mousepad -
http://www.officedepot.com/a/products/310446/Office-Depot-Brand-Extra-Large-Mouse/ - available at my local office depot.
Second, I cut either edge out, both 3.5" deep, the length of the mousepad. After that I stacked the two pieces on top of each other, and despite the lower height, I still had issues with the edge digging into my wrists, so it was still quite uncomfortable. I sat around for awhile trying to figure out what I could do to "remedy" this situation, and I realized that the only way it wouldn't dig into my wrists is if it were somehow staggered/sloped downwards. I decided to take another strip and place it in between each larger strip cut off the ends as seen in the picture below:

I cut the middle piece to a depth of 2.75", allowing it to slope down when my wrist is on it:

And the final result is actually rather pleasing to look at:

I found this infinitely more comfortable than any of the other wrists rests I've tried, so I thought I'd share. After I decided on this "final" design, I simply used a gluestick to glue the pieces together. With an extra mousepad, one could easily make it high enough to their liking, or simply use only two pieces (one large on top, one small on bottom) to make it lower, but still retain the comfort you gain by allowing the top of the pad to slope downwards as your wrist rests on it.
Pretty good deal for $9.99 + tax IMO.
Size of the wrist rest when finished: 13.25" x 3.5" x 0.5" - but ideally you could make it any size you wanted.
I hope at least one person gets a good wrist rest out of this
