Where's the bag? I just see a chest...

The chest is the bag.

my understanding of in the bag... was that whatever it was was obtainable.... hence bagged...?...

In The Bag:
To have something secured.

But it's "in the bag," not "in the chest, invisible..."

Why don't you change the chest with an old bag (by popular demand), tied up with a rope - medieval style - and a warning when bag is open, etc.
It would be a pity to get low votes just cause of this.

I've made the bag.

Now it's a suitcase! Not trying to be rude or anything Still great image!

A suitcase is a general term for a distinguishable form of luggage. It is often a somewhat flat, rectangular-shaped BAG with ...
Wikipedia says that suitcase is bag =)

My respect author , by now many people would have given up, rendering a bag in the "google image" sense. But NO!!! you're bringing bigger guns !!!

"Wikipedia says that suitcase is bag" LMAO

HAHA I guess no one can argue with Wikipedia! Good Luck Mate

Fantastic work author...well done