Grog- I thought you might enjoy this post from another biking list about the Barley bag:

Forget meters, liters and peanuts, I arrived home last night carrying
the following in or on my Barley bag, following a morning ride at 45
degrees and an evening stop for groceries:
spare tube & irons, mult-tool, small rag, small cable & lock, seat
cover, pants strap, small pump, itouch, flash card, pen, small bottle
of arnica and two tubes of medicinal ointment, three ears of corn, one
lb of meat, small container of cottage cheese, wool Riv tee shirt,
skull cap, Ibex wool shak jacket, wool arm & thigh warmers,and my
cateye TD1100 tail light.
Michael
Westford, Vt