Go to the army surplus store and buy one of those canvas beasts.
You know the kind that take a one by one frame and has a space for a pot bellied stove.
I want one of those to put in the backyard as my hobby Hut.

It would depend on where you will be using them. The blue top one looks to be lighter in weight. If you are back-packing on foot that one may be easier to carry. But if you are car-camping the larger grey one might be roomier.

2

Think the top one looks better

Both of those look really nice.

One you can stand up in.

Bottom one.

Number 2