If you're working within a school curriculum, you can find appropriate activities based on the learning objectives and age group. In several countries there are guides linking CS Unplugged to the local curriculum (e.g. Digital Technologies Hub for Australia). But the unit plans listed follow the common topics that are appearing in school curricula, so you are likely to find something relevant from the titles. Note that CS Unplugged does not teach programming - the Kidbots activity is an excellent lead in to programming and the "Plugging it in" sections give some programming exercises to follow up with - but in general we are trying to show students what they could do with programming, before they have to learn it.