WordNet sense 1 (the sharp sound of snapping noises):

crackling, crepitation

WordNet sense 2 (glazed china with a network of fine cracks on the surface):

crackleware, crackle china

WordNet sense 3 (make a crackling sound):

crepitate

WordNet sense 4 (not plain; decorative or ornamented):

fancy

WordNet sense 5 (make crunching noises):

crunch, scranch, scraunch