Tool storing and saving

How do i make a tool storage system that saves?
does anyone own a free model that does that?

Would be best to establish how does the player obtain these tools? Are these paid for by microtransanctions? Are these just picked up and once in their backpack they are stored automatically? If the player drops the tool do they lose access to it? etc.

just like the normal tools but put them in a chest or something and they save to next session

I already replied to someone asking the same thing, hope this helps