Here is a Maj7 and Dim7 arpeggio that I learned, with midis. Fingering is below the notes.
Dim7: (A tritone interval apart)
G, Bb, Db, E, Eb, D, C, C#, E, G, Bb, A, Ab, (REPEAT)
1, 2, 3, 4, 3, 2, 1, 2, 1, 2, 4, 3, 2
http://www.brownfloyd.com/gallery/displayimage-2308.htmlMaj7: (A minor-third interval apart)
Notes: F#, G, B, D, Db, B, A, Bb, D, F, A, Ab, G, (REPEAT)
RH: 2, 1, 2, 4, 3, 2, 1, 2, 1, 2, 4, 3, 1
LH: 4, 3, 2, 1, 2, 3, 4, 3, 2, 1, 2, 3, 1
http://www.brownfloyd.com/gallery/displayimage-2307.htmlI haven't fit them in anywhere yet. They just came to me during practice.