I'd put up a photo montage around your desk of outdoorsy things, and bring in a small floor mat tiled with pebbles then take your shoes off while you work and j

I'd put up a photo montage around your desk of outdoorsy things, and bring in a small floor mat tiled with pebbles then take your shoes off while you work and just rest your feet on the pebbles. That might produce enough sensory stimulation to keep you from going crazy.