If you want something to mess around with, try transposing normal harmonics. Pinch harmonics are cool and all, but you can't really control their note value. I mean, you can, but I've just gotten bored with them after a while. So, try finding harmonics that are low on the neck, and then transpose them in your chords.

For example, if you're playing something on the low E, you can create a harmonic by lightly touching the third fret and striking the E string as you would to normally play it. So then, if you play a chord somewhere on that string, stretch your pinky and hit the note three frets above the base note. You can control your harmonic's note value this way, and you can also bend or wiggle it without having to use a whammy bar if your guitar doesn't have a tremelo system.

Just something to try . . .