A DIY "stick" (self massage tool)

Last week, after running the Lakefront 10 miler I decided to stick around for a free massage Chiro One was offering.  My left glutes act up after a long run, so a massage seemed like a good idea.  The masseuse used a stick.  It worked well.
However, after visiting the website I wondered if I could create a cheaper alternative.  I have a cheap store brand wooden rolling pin that I bought at my local Jewel.  Never used the thing.  Could I duplicate the bumpy surface found on some foam rollers?  Sure.  A trip to the dollar store later, and I had  a bath mat, which I cut to size.
How to fasten?  I didn't have the right size nails, nor did I have the appropriate sized staples.  I did have fast drying glue.However, to make sure the mat stayed on the rolling pin, I channeled my inner Red Green and resorted to "the handyman's secret weapon - duct tape".
You can see the result here.

It works just as well as the stick.