You folks may have already found this but I found a cheap ($0.99) alternative to the MINI bungee net at Daiei today. I've been using my old M3's bungee net (which is too big for the MINI) and have been thinking about getting a MINI one. We were at Daiei and while my wife was shopping my daughter and I went to the $0.99 section. I was by the bicycle section and found this red bungee net (with four hooks in each corner) that I thought would work - sure enough, it's a perfect fit. It's of course cheaper looking and thinner than the "official" one, however, it works and it's only $0.99!