1. buy luggage strap with QR buckle from the dollar store.

2. you must have extra clip-on shoulder straps....when you remove
the one you use to tote the bag, use the spare one cut shorter to
go over the top of the bag.

3. use scrap piece of strap/webbing, sew some velcro bits on.
doesn't need to apply pressure, just keep the lid from popping
open on bumps, right?