You can pick your nose, but you can't pick your lock. At least not until you've had proper training from Ehdching's cutaway practice padlock and lock pick set. This complete DIY package includes a transparent cutaway padlock with open chambers on all moving parts that provide a full view of its inner workings when a key is inserted, as well as when you try your luck with the lock pick set. What's less clear than the lock: whether or not there are any instructions on how to pick the thing, or if it's all on you to man up and figure it out how to become a petty thief on your own.
If you're willing to sacrifice the lock pick set you'll pay a little less for Kinglake's version of the cutaway lock and set of keys.