Cheap Pumpkin Carving Saws Make Great Lock Picks
Not that you'd ever pick a lock for evil or nefarious reasons, but if you find yourself missing a key, here's a cheap and effective way to open those cheap locks. I'd throw you a link, but since they've been discontinued, your only hope is to catch one cheap on eBay or pay a ridiculous price at Walmart.
Don't forget, you'll need a few basic picking tools for the modifications... So you can do good and help someone with these lessons.
Now repeat after me:
I will not use the internet to learn how to rob people.
I will use these interesting skills for my own entertainment,
and towards the good will of helping others.