In the last month, I've consumed (not just destroyed, actually ingested) close to $8 worth of ball-point pens, not counting all of the freebies I find laying around.
Otherwise, I chew-up spent saxophone reeds (bamboo = tasty) fingernails (mine are almost painfully short, all of the time), the rubbery stuff inside of golf balls (the shells taste like crap. That blue, foamy rubber stuff is da bomb.) and several rolls of dental floss, adequately chewed into shreds of nylon pulp.
I learned at an early age not to chew on power cords.
Oh, and I eat food, too.
Claudio says I would have made a better goat than hawk.