The fanciest combo I've seen (and managed to pull off only once), what my friends and I have dubbed the "Korean Combo", is as follows: Point blank Q, place a ward behind the person, W to the ward, R them, second Q to them while they're traveling during R.
Also, I know I'm probably going to catch some hate for this, but I think Locket is a vastly overrated item on Lee Sin, and is a situational build rather than a core item. The situation being when you have a lane that's losing pretty hard, but the enemy is also required to go all in to get the kill, but is still not assassin-level bursty. This narrows it down to maybe 1-2 dozen champions at best, and only if they're winning. Locket functions best on Lee when you can use it in conjunction with your W to bait fights out, like it's a mini Shen ult. Other than that, I prefer to build a bit of damage early and let the support pick up a locket when they can.