I ran into an issue where the metal drum is able to dupe logs.

items needed:
-5 logs
-metal drum
steps to reproduce:
-stand next to the metal drum
-put 4 logs on the ground, keep one in inventory
-interact with metal drum and choose "Add Logs"
-interact again but choose "Remove Logs"
-you now have 5 logs in your inventory and 4 logs on the ground

I guess that the "Add Logs" interaction is selectable with the logs in proximity but does not remove the logs on the ground if you also have a log in your inventory. This does not work if all logs are on the ground.