Sure do.

Scientific article I based my device on: http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2936319/

"NIR has a wavelength of 880 nm to 890 nm"

"Researchers hypothesize that the success of NIR treatment lies in its ability to increase bioavailability of nitric oxide (NO) in the lumen"

"890 nm wavelength light, pulsed at 292 times/s, with a power output of 600 mW/cm2"

"The mechanisms with which NIR can alleviate RLS symptoms are not clear. One supposition can be made: light has been shown to generate NO in the endothelium, which through a cascade of events leads to vasodilation. Vasodilation is also the result of exercise, one of the few non-drug related treatment options that decreases RLS symptoms."

The above is the basis of my research. From this, I can make a device that does roughly this.

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My Bill of Materials are the following:

     12v @500mA wall wart
     30 http://www.digikey.com/product-detail/en/TSHF5410/751-1211-ND/1681346  IR LEDs
     barrel jack to fit wall wart
     perf board to fit LEDs
     project box
     IR-transparent acrylic (window in project box)

I used a scrounged wall wart (free), the LEDs are $20, the barrel jack was scrounged (Free), the perf board was $5, the project box was $9, and the acrylic was scrounged (Free). Total cost for non-scrounged was $34. I'm also part of a hackerspace, so scrounging was easy for me. I also used a bit of hot glue to make smooth interface where the skin would touch.

The circuit design is here: http://imgur.com/5Op2ndU

Solder them together through perfboard, and put in project box. Cut out a window on the box and put in the acrylic window. Now, all you need to is plug in the barrel adapter to the wall wart, and it works.

This is what I use. It puts out roughly 1.35W of IR light. I misremembered about using 3W. But this works, as it's a reproduction of my build.