Your here, and you want to learn to pick. Click on shrubs signature banner.
On a destructive note you can contact your local welder, and they can cut the box open for you.
Also you can pick a lock open, and you can also pick it closed.
Yeah if your giving it to your dad, you can give it to him on the condition he has a key made for it. Perhaps the manufacturer of the tool box can send you a key. Call them with your serial number etc..