A practical guide containing descriptions of 11 Tinkering activities for adult learners. It can be used by community development and informal learning practitioners working with adult groups. Some of the activities were newly developed while others were adjusted from already existing and tested activities. Special focus is given to activities suitable for adults from different backgrounds, taking into account different needs, interests and motivations. This publication is a product of Tinkering EU: Addressing the Adults, funded with support from the Erasmus+ Programme of the European Union.