Although they are fairly thin, the old Qantas J amenity kits were of hard plastic outside and some sort of mouse fur on the inside. Size is about 190mm x 240mm and about 50mm thick. I use it for electronic bits and pieces. The only thing that doesn't fit well is a UK adapter!
Unfortunately QF have 'enhanced' their J kit, probably because so many complained about this one.
Found one on ebay
http://cgi.ebay.com.au/QANTAS-BUSINE...item19c2e7f4a4