I bought a cheap rattan basket (actually 3) of the desired size, (probably meant to be a laundry hamper), put on some shoulder straps plus some backing for the strp attachment, and painted it with epoxy. It stiffened it up enough that it lasted 10+ years, it wore through on the bottom eventually, so the current one has some woven nylon (also painted with epoxy) as an abrasion layer. Perhaps "cheap and nasty" but it is light and works. Just looks like a rattan basket that shouldn't be that strong or durable. peter