I remember rolling around as a kid on shag carpet (hideous shades of orange) most likely made from some obscene synthetic polymer. Anji Mountain Rug Company  has luxuriantly soft deep pile bamboo and organic shag rugs that will smother you in a wave of nostalgia (natural nostalgia). Each renewable bamboo/cotton strand is about 1.5 inches long (I think that is sufficient for shag angels) and backed with organic cotton canvas. "Bamboo fiber is naturally antimicrobial, hypoallergenic and odor resistant." Anji Mountain Company is the first to produce such a product and with great success as finalist in the 2008 Housewares Design Awards held in Times Square. The Bamboo Shag area rug at 5'x8' would be perfect for back to college or the new apartment and is available in five solid colors (no putrid green!?!).