I am exhibiting at an event at the end of May and needed a bumbag. I decided to use up some more of the denim and this is what I came up with.
The pattern is the Total Bumbag and I bought it from Craftsy - click the link at the side and do a search. It's easy to follow and a relatively quick, if fiddly, sew. there is a waist strap but it's hidden in the photo.