IO think this one maybe a good choice,hope can help you.
HaHaXiu Cartoon Zombies Waterproof Protective Sleeve Cover for iPad2 iPad - DinoDirect.com
This is a discussion on Slim, basic carry case within the iPad Accessories for iPAD 1, 2 and 3 forums, part of the Apple iPad Discussions category; Hello,friends, IO think this one maybe a good choice,hope can help you. HaHaXiu Cartoon Zombies Waterproof Protective Sleeve Cover for iPad2 iPad - DinoDirect.com...
You might want to check this shoulder bag from ColcaSac MacBook Shoulder Bag, a Hemp Messenger Bag for MacBooks and iPads.. It can fit a laptop and iPad, also has pockets for other gadgets such as mobile phones.
Just to update you all. The CaseLogic bag I settled on has been a definite winner, and I couldn't be happier with the choice. It was also quite a decent price through Amazon.
The one thing on my original list of specs that it doesn't quite fill is storage space for A4 sized documents. It has some handy internal space on one side of the divider (the iPad slots in on the other side, with an elastic strap and Velcro fastener to hold it in place against the side of the bag). But the space is fractionally bigger than iPad size, which is a couple of inches shorter in length than A4. So just right for a small paper notebook or a few printed documents folded in half. It's not as if I carry legal documents around, so I've decided that's not a big deal afterall. Certainly a small cost for the compact, lightweight convenience of this very functional bag.
MBP late-2011 -- OSX 10.7.2 -- iPhone 4 -- iPad 2 -- iOS 5.0.1
Carrying cases for the iPad can be a challenge since every one has different needs. And the more functions the bag does, the more it negates the real function of the iPad. I have tried several and have two messenger bags and a folio that I rarely use. I have found that I either just carry it around with a protective cover, or carry it in a pocket of my computer bag. When I travel, I will usually take both with me, and it is a handy way to haul my cables and accessories. I am glad you found a bag to suite your needs. My CaseLogic bag is nice, and I can recommend them for those who need one like that.