I searched her blog and found where she bought hers at a knit shop while traveling. I would think almost any bag with zippered pockets that isn't huge would work. I may have to go on a busy bag hunt for myself. Teeheehee. That Bonnie Hunter is such an enabler.
I now have a two treadles because of her. LOL Oh, and an Ikea clip on lamp also. That was much cheaper than the treadles though.