Saving seeds in nature

How? Simple shelter for rain protection? Clay pots in earth? Any ideas...?

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I think the OP was asking about how to protect your seeds in nature.

I think you could take a glass mason jar into nature and keep it there effectively. A blown egg might be the ticket, unbroken end up, up on a little bit of free draining debris inside of a hollow cavity in a tree.

Yes perhaps I do not quite get the question.

are you talking about collecting and drying plants for seeds? collecting seeds wild? storage?

each would require a different method.

Yes, i'm talking about storing seeds in nature. Different kind of seeds... veggies, wild, cereals, ...

Emerson, nice idea with an egg. Mason jar is also a good one.

I like the idea of using clay pots, anyone have a tip or idea how to use them? For now i'm thinking of doing some simple shelter and then storing clay pots inside. But i'm not sure about freezing.

"Seeds" is a big category. 
If the seeds are dry, freezing usually won't harm them. It does depend on what seeds tho, some seeds need to be stratified, that is chilled to 40F for so many hours so they can sprout when spring comes.

Most seeds keep better in dry conditions.

Using a glazed pot and including some fresh charcoal as a dessicant might help a lot.

unglazed pots  will wick more moisture, then no need for the absorbent, IMO

Leif Kravis wrote:
unglazed pots  will wick more moisture, then no need for the absorbent, IMO

Depends where you are, in coastal areas air is saturated, damp pots would wick more water in than out.

Why are you saving seeds in nature, exactly?
If it's wild edibles, they usually self-seed just fine.
If it's introduced garden plants, why are you trying to save the seeds in nature?

If it's a back-to-the-woods feral lifestyle thing, maybe look at the places in nature where seed sometimes gets hidden away for years before sprouting, like under heavy duff or forest canopy, or in a dry crack in a rock or cave.

Cool, dark, and dry seems to do it for most seeds.