Drawing freely on the wall is what many children love to do, so why not let them draw on the floor (outdoor of course!) instead. Just bring a box of colourful chalks and bring them outdoor where it is safe for them to just relax and draw on the floor (porch or pavement). Let them be creative unleashing the arts talent in them.
It is a good activity that helps with the fine motor skills which involve the use of the small muscles that control the hand, fingers and thumb. Fine motor skills are crucial because the ability to use the smaller muscles in the hands allows children to perform self-care tasks without assistance, such as buttoning, zipping and writing. (https://www.healthline.com/health/fine-motor-skills)
(Photo from Alimkids Bukit Jelutong. Contact us here for more info about our Alimkids centres)