Try out the “together alone” ideation process, in which each of you works on your own concepts and ideas in silence, but in the same space, with regular intervals where ideas are shared and progressed.
Keep all concepts and ideas visual – so that you and your team can pass them by and reconsider their purpose, usefulness, viability, etc.
Continue to experiment – the ideation process, like innovation, is an ongoing one. Never stop moving forward.
Change your scenery – It may seem a minor detail, but if you want to think out-of-the-box during your ideation session, it may be advisable to change your usual place, i.e. change the setting, as a new environment can introduce new stimuli and be beneficial for the generation of ideas.
Create a safe space for ideas generation – try not to be judgemental about your own ideas, or other’s.