[johnnklein]

I use wasd and spacebar as normal, but I use command (alt if a windows computer) for inventory and caps lock for sneak. What's cool about using a mac is caps lock holds sneak even when you aren't holding it. (I can sneak with no hands on the keyboard!)
I use the planes mod so I can't use e as inventory because that's used to exit the plane.

[Bonejunky]

I use WASD for moving, Space to jump, E to sneak, shift to drop.

[Intelli]

I use the old default keys. (So "i" is inventory).

[Keyhen]

I use the old default keys. (So "i" is inventory).

Same here

[Bonejunky]

Oh yeah, I also have I as inventory.

[KyleFate]

I use the old default keys as well.

[asxyninja]

I use the old default keys too.

[Wxclm]

old default

[Energybrothers]

I couldn't get used to the "E" because it was so weird. Mine is all default

[Spritzo]

WASD, I for Inventory, Q to drop, Ctrl to sneak. Because everyone knows that Ctrl (or C if you want) is crouch in every PC game. Shift is for running. Come on Notch, haven't you played the original Doom?