I too am late to the thread but I find that for discreet general and travel storage of any type of Cannabis (be that flower or hash) I tend to use Paracetamol (or other medical) containers like this one:
http://www.istockphoto.com/stock-photo-17233278-paracetamol-tablet-container.phpThey are widely available to buy, they are extremely cheap, they are airtight (so do not let smells out or any wet in), they are small (so you can carry them around in your jacket or bag pocket) and you always have a reason to have it on you ("Oh, those are just painkillers as I'm prone to headaches").
They won't fool drugs dogs and, obviously, if anyone opened it then you've been rumbled but they are odourless enough to not rouse the suspicions of non-smoking family or friends.