For more on metaphor and creativity see here:
Bolognesi, M. Van den Heerik R., Van den Berg E. (2018). VisMet: a corpus of visual metaphors. In G. Steen (ed.) Visual Metaphor: structure and process (pp. 89-114). Amsterdam: Benjamins Publishers.
Kövecses, Z. (2010). A new look at metaphorical creativity in cognitive linguistics. Cognitive linguistics, 21(4), 663-697.
Giora, R., Givoni, S., Heruti, V., & Fein, O. (2017). The role of defaultness in affecting pleasure: The optimal innovation hypothesis revisited. Metaphor and Symbol, 32(1), 1-18.
Littlemore, J., Pérez Sobrino, P., Houghton, D., Jinfang S. Winter, B. (in press). What makes a good metaphor? A cross-cultural study of computer-generated metaphor appreciation, Metaphor and Symbol.