The Cocoon Grid-It gadget organizer.
I first got my Cocoon Grid-It last July from Amazon, before ESA Distribution brought it to Singapore. Now it's easy locally, at Kinokuniya, NBC Stationery, Takashimaya, and Cumulus. This time I picked up the 7.25 x 9.25 for S$19.95.
Cocoon makes an interesting product I'd call a bag organiser for gadgets, the Grid-It. It comes in various sizes and colours to suit different bags and devices, with prices from US$10 to US$50. It's a patent-pending object retention system.