Ideally I want to make a "bag of holding" for my character. The idea is that it can hold X amount of stuff without being cumbersome, which doesn't seen like that alone is a big deal. But I am unsure of how such an little would work, both in game terms and in story terms.

I'd imagine that it'd be a small portal to a sealed chest in the Nevernever (which opens up fun story ideas with things being taken from it from the Nevernever, our something getting out from there when the portal is opened).

The idea that it could only be used so many times outer game session is kind of lame. If that was how it worked I'd expect that it could hold all kind of stuff, many this a super declaration sorry of item. Maybe it ours most it's strength into being able to be opened frequently, or it goes into duration so it is treated as active for a day our a week at a time.

I'd like input on this idea and my interpretation of both story and game mechanics behind it.