Reduce Screen Time - Content delivered on the screen, makes kids consume and not create.
Go Outside - Nature offers numerous opportunities to get creative - Mud castles, art with flowers and leaves enhance creativity.
Work with the Hands - Any activity that uses the hand increases creativity - art, craft, cooking, cleaning, stitching.
Recycle - Building useful and artistic things with cardboard and other packaging.
Conversations - Story telling, role playing and back and forth conversations are great to build creativity.