To make things like bread and such you'll need lots of seeds to make alot of breads, but then there is the byproduct straw...
You can put them in chicken coops and such, but they get full too. So my idea was to be able to bundle straw and plant fibres so they don't use alot of place. You would need one rope and at least five pieces of the material you want to make a bundle for and then, when it's finished, you can store alot of the material the bundle is made for inside it. The bundle itself would take up 1x2 or 1x3 but it has lots of inventory space for the material it is made for. If not bundles, haybales would also be an option.