So the first on this list, mainly because it is different, modern, and readily available for purchase, is the Forever Lock!
This trick padlock wasn't designed as a trick padlock at all. It has actually been designed as an "unpickable" padlock with a hidden key way. though the design has been picked by several skilled lock-picks. I must say, in terms of security, it's a very poor lock design. The steel isn't hardened, and the small amount of steel holding the shackle in would shatter with the swing of a small hammer.
BUT! Actual security design flaws aside, it is a very pleasant and creative locking mechanism. Including "finding" and inserting the key, I'd say it takes 8 steps to open this padlock. Even after owning this padlock for quite a while, I still find myself coming back to open it and just enjoy the subtlety of it's mechanism, as the moving parts gently click into place. It's like sweet, soothing therapy in a padlock.
|Towers over that puny T8|
There isn't much more to be said for this padlock, other than it is highly recommended for your collection, and readily available. Clocking in at around $100 USD after shipping, it is worth buying, and won't break the bank like some of the other trick padlocks around.
Purchase it here: The Forever Lock in three different colors! I bought it in black because Batman wears all black. Batman is a badass. Owning this lock in black basically makes me Batman. I know you hardcore puzzlers can follow that logic.