I like the idea, but I've some questions/suggestions:

Questions:

• How do I bind in the boxes/sacks into a trade mod like Trade-o-mat or Vinconomy?
• How do I refill them? Or did I have to recraft them?
• Is it possible to make them usable without any trading mod? Maybe as a "cellar store"? We don't use one because we want to give the player the possibility to haggle.

Suggestions:

• Is it possible to make the Sacks/Barrels usable like a normal container in a cellar (!) to prevent spoilage entirely (and only there)?
• Would it be possible to give us deco only variants (full, half full, etc.) which use way less materials and are for deco purposes only. The ones from the mods are too expensive in food items to use them for deco only, if we don't use trading mods.
• Are shelfs, basket and boxes variants possible like in this video? Youtube MC Mods for Fruit Store
• Is it possible to get cages for selling of animales?
• An Egg tray would also be very nice!

As someone who love to decorate my builds with nice and usefull stuff (and user of any possible and compatible deco mod for MC) I would love to get as many decorative (and usable) storage possibilities as I can get my hands on.

I like the Idea but it would be cool to see that the grains could be retaken so player to player interaction via trading is possible and not adminshop only maybe the a bag whit ice or something need for that.

ArtiKs thx for feedback, I'll check whats going on with crash. Probably something is messing up the integration with the primitive survival modification.

I'm not familiar with trade o mat mod. I was thinking It was a means for one player to sell things to another. If so, why would anyone buy a bag of grain that can only be used as a decoration. Or is trade o mat a mod that just pays you for things that would make more sense. 

Though, the decorative items themselves are a great idea.

I've always wanted that any food stored in a barrel or crate could render specifically to be displayed as a decorative block and didn't rot.
The trade off is that you can't get back the items used to craft this purely decorative block and that it can get expensive sometimes... this mod is a start to that.

The mod crashes if you hover over the fish barrel and press H to see a crafting recipe.
Does it require another mod?? As far as i know, you can't plant bellpeppers or get fish like that in vanilla, so that might be what's causing it to crash...

Vronizos

if you can't recover the grains/vegetables/fish once you've created the box/bag, what's the point of doing it? you lose food right? I didn't really understand anything.
Is it only for taking to the seller? I prefer that they serve to store and preserve said foods the truth 

Raccoon this is not a modification to make cellars useless. The mod is only intended to make it easier to sell vegetables/fish/grains (e.g. using a trade'o'mat), because there will be no problem with the different freshness level of vegetables displayed at the sale and the freshness level of vegetables in the player's eq. If the player wants to sell their harvest by converting it into crates/bags from the mod, they will not be able to reuse it for e.g. cooking, they will only be able to sell it or use it as decoration.

I'm not sure how you go about getting the stuff back out once you put it in, but as long as you have to take it all out at once, and you can't take it out a few at a time, then it should not make cellars useless at all. Since you will still have to preserve the leftovers you removed. But if it still seems to game breaking, have it, so the container is lost when you remove the goods. The seller then adds the cost of packing to his price, so no lose to him, but anyone trying to use them to store all their goods instead of a cellar will spend a lot of resources remaking containers every time he needs a few cabbages or what ever.

Hm not sure if this approach is that good. Basically make cellars useless if you have enough. I like the idea though, im working on "packages" for cattails and common items, so you can sell them in bigger bulk.