I work in leather and the sporrans that I've made all use a snap ring belt. When I'm driving I just unsnap the sporran and put it aside. Of the two belts I've made one is adjustable (the nice one with chains on the ends) and the other (my 'everyday') is just a strap with a clip on each end. The clips, leather, and rivets can all be found online from many sources or at many craft stores in the U.S. (Got a nice set of clips from a 'create a purse' section in a fabric store- they had straps too but the ones I cut are cheaper.)