After we finish the noun game, we sometimes complete a "mad-lib." Usually when we are focusing on one part of speech, I will fill in the other parts of speech that are missing (i.e. going ahead and providing the verbs, adverbs, etc. and just leaving the nouns blank) and they provide the nouns and then we read the stories aloud for a few laughs.
As an extension to our activity, we use the noun cards to create original sentences and then mark our nouns with black triangles.