Up for your consideration, two Haversacks (or possibles sacks, depending on your preference):

First up is a Tapestry Haversack. 15" x 15". Plenty of room for your stuff, or take it to the current event, and load it up with your purchases. $60 shipped

Next is a brain tan buckskin sack. Size is 9" wide x 12" long. Can be made "taller" by just extending the flap closure. 1 1/2 " gusset, with red Fox braid welts. Abalone shell button, and woven strap. This one has definitely "seen the elephant." (Bob McBride would like this one, too). Use it for your medium-sized haversack, or a large shooting bag. $75 shipped.
Thanks for looking!
-- JB