Are you interested in selling backpacks to your users?
It's possible with this plugin!
Here's a step-by-step guide on how to make a shop with backpacks:
You can find the plugin on SpigotMC.
Put the .jar file into your plugins folder in your server:
vzBackpack will automatically detect Shopkeepers.
Now create your desired Shopkeepers-NPC. In this example we will create an Admin-Shop. Look at the position you want to create the NPC and write:
Now give yourself a backpack with:
Now open the shop editor with Shift
+RMB
.
Place the backpack in the first column and the payment (for example diamonds) in the third column.
Exit the inventory to save the changes.
That's it!