Wizard
Found this useful.
Simple one octave C major scale:
|-------------------------|----------------------|
|-------------------0--1--|--0-------------------|
|-------------0--2--------|-----2--0-------------|
|----0--2--3--------------|-----------3--2--0----|
|-3-----------------------|--------------------3-|
|-------------------------|----------------------|
C D E F G A B C B A G F E D C
Play it up and down until your hand aches and your fingers bleed.
(or for 10 minutes; whichever happens first)
Start playing random notes from within the scale; start hearing intervals and inventing little tunes ... until you're "composing in C".
Then play the open C chord.
Suddenly the theory of the major chord all makes terrible sense.
Not just a hand shape anymore; but a meaningful set of notes within a major scale.
That was fun.