The paper presents the Fun Toolkit (v3), a survey instrument that has been devised to assist researchers and developers to gather opinions about technology from children. In presenting the toolkit, the paper provides a reflective look at several studies where the toolkit has been validated and considers how the Fun Toolkit should be used as well as discussing how, and in what way, the instruments contained within it should be employed. This consideration of use is one of the novel contributions of the paper. The second major contribution is the discussion based around software appeal; in which the fit between the Fun Toolkit and usability and engagement is explored. The paper concludes that the Fun Toolkit is useful, that it can be used with some confidence to gather opinions from children and that it has the potential for use for other user experiences.