Here’s a nice jazzy drill, to give you practice on:
(1) Adding interest to your melody lines, by sometimes preceding the “target tone(s)” of a chord with “approach tones;” and,
(2) increased mastery of any given scale, especially as it relates to the underlying chords.
As a result, the repeated act of mindfully (and not mindlessly) practicing this drill can increase your general facility with approach tones, as well as give you (possibly new) theoretical insights regarding chord-scale relationships. Dig? You’ll see.