DIY - Butterfly Bean Bag

While Photographing Stork-billed Kingfisher with Mr.Tean at the fish farm last month, I noted Tean using a bean bag, and put it on his car's window to support the telephoto lens. His brother bought it for him in Johor.
I search the internet for such bean bag and found this 'BAA BLUBB' bean bag at Arthur Morris Birds as Art site. The problem is COST. One BLUBB will cost you $100 (RM350) (shipped empty, no beans included). I will not pay that much for a piece of cloth. So, I search again for the DIY beanbag and I found this site, by Fred Hurteau.
With my wife old long dress and my limiting sewing skill added with four kilos of green bean, I managed to complete the project in two hours. (that's including reading the sewing machine manual!).

It took me a few minutes to understand the layout, especially the step 5 and 6 where you have to fold the four corners and make it like a tight bunch.

The final cost only RM18.00 (about US5.00), that the cost for 4 kilo of green bean.