every melody you hear be it 4 notes or 32 notes has the potential to be a lick and an enhancement to your vocabulary. Jazz musicians have for a long time quoted from melodies in their solos.Try this...take the corniest melody you know and practice only this in all 12 keys. Then mutate the melody to work over a minor chord,major and then dominant to instantly give you 36 licks.The slightest mutation in this melody either rhythmically or otherwise will generate more.This is a fundamental way to enhance your vocabulary,so do NOT scoff at a melody citing it to be 'Bollywood' or whatever,just take it and noodle it and then own it.Creativity is completely in your hands.