This probably cost about RM1! Just boil the sago over the stove. Keep stirring to avoid burning at the bottom. When it starts turning starchy, remove from stove. Soak them into warm water. Separate them and drop few drops of colouring of your choice! Let it soak for a while and ready to play. I would recommend you to remove the water colouring and replace with plain water before handing over to your kid to play!