The interval of a 4th is very useful for contemporary styles of jazz improvisation
As an alternative, instead of stepping up a semitone between each 4th arpeggio as shown here, try using a whole tone.

Again, instead of stepping up a semitone between each 4th arpeggio as shown here, try using a whole tone.

This exercise consists of groups of 3-note 4th arpeggios moving in minor 3rds

All the fingering exercises are available in book format. These contain expanded versions of the online exercises (many of them in all keys) and also a section on tone exercise. 144 pages of fun!