[Request] Equipment storing system for RPGM VX

Hello Guys, i'm trying to do it with Eventing, but it seems impossible, or i lack the ideas maybe...i've searched all around but cant find any kind of script doing this, so i ask you for help.

My idea is simply as that:

Since many item sometime are usefoul just out of battle and the inventory is full of things i dont really need to have with me all the time, i will like to have a script that i can use this way.
Calling a command with a item [infinite bag ?] i will let choose the player to drop in the bag/box all the item he wish to store for later times...or to take in the inventory, items previosly stored in the bag.
This is all i need...a bag that can hold infinite items and infinite numers of items, wich the player can use out-of-battle to choose wich item carry with him and witch other leave in the bag.

Thanks for your time,
if need of more information, ask me, but really is simple as that ^^