50 Ways to Improve Your Improvisational Skills. Book & CD Package by Dennis Taylor, Steve Herrman. These books (available for alto & tenor sax, trumpet, keyboard, and guitar) are for players interested in learning how to improvise and how to improve their creative phrasing.
Trumpet: The 50 ideas are divided into three main sections: Harmony explores scales, arpeggios, chord substitutions, harmonic embellishments, and other harmonic phrasing ideas; Rhythm covers legato tonguing, swing feel, rhythmic displacement, how to manipulate time, and other aspects of rhythmic phrasing; Melody discusses contour lines, making patterns musical, developing a motif, building a solo, and many other melodic phrasing ideas. The companion CD contains 26 demo tracks for listening, as well as many play-along examples so you can practice improvising over various musical styles and progressions.