If he's willing to remain in his cubicle all day, Dilbert should build a double-walled Faraday cage around it, then connect high voltage sources of opposite polarity to each wall so it acts like giant bug zapper. He could then ditch the padding, since there would be no incoming co-workers, and as an added bonus, no incoming wireless signals.
@uldlid - ya, your right, it was Dr. watson that came up when windows crashed a while back ago. Except that they now use other Diagonistic tools as well...
Hmmm.. Another thing Dilbert could have done was placed a Enviro-suit over his padding to better protect himself from hot burning liquids, acids, bases, and bodily fluids....