When developing Phonological Awareness there are a number of building blocks which allow learners to have secure pre-reading skills. Onset-Rime is on of these building blocks which can build on a learner’s rhyme awareness and detection.
One of the activities which are suggested within the Emerging Literacy Onset-Rime Handout is Picture Rimes.
To support your development of this, you may be interested in the Rime House game which has been shared by Reading Rockets. This includes a number of picture cards and a task description.