Just wanted to share something neat I found, it's possible to construct 4 "chords" out of only major and minor 3rds that contain all 12 notes of the chromatic scale. They are (using C as the root):

1) C,D#,F#,A,C#,E,G,A#,D,F,G#,B - Has a diminished flavor
2) C,E,G,A#,D,F,G#,B,D#,F#,A,C# - Minor-ish
3) C,E,G,A#,D,F#,A,C#,F,G#,B,D# - Major-ish
4) C,E,G#,B,D#,G,A#,D,F#,A,C#,F - Augmented flavor


Might be useful to anyone wanting to jump into chromatic writing or improv. You can break any of them up into smaller chords and riff off of them.

Just for an example, you could break (3) up into the smaller chords <C,E,G,A#> <A#,D,F#,A> <A,C#,F,G#> <G#,B,D> and riff off of those.