Great lesson for beginning vibe players as well!
The major scale, circle of fourths/fifths.
The theme of this lesson is to find something that YOU like when you play. Forget about judgement, and just listen. Find patterns that sound good, pick out melodies that sound familiar or make up new ones, experiment with different ways of striking the instrument. Try anything. Record and/or remember the things that you really like, and then later you can learn WHAT it is you played so that you can do it again, or be free to change it however you want.