Name: KInvBackup
Link: https://www.spigotmc.org/resou…y-inventory-backup.15067/
About: This plugin is very simple - it allows you to make a backup of a player's inventory. This backup can be created in many ways and then used to restore player's inventory whenever there's a need for doing this
Name: Inventory helper
Link:https://dev.bukkit.org/projects/inventory-helper
About: Have you ever needed to save your inventory to make sure it was safe? Or get back those items you just lost? Well now you can with Inventory Helper! With the two simple commands and permissions it is easy to configure and help save those players lost items everwhere!