Seems quite obvious. Let’s examine it a little closer and see what goes on to make this obvious - the obvious.
1) The child or a parent needs to think that maybe she should try to build something without referring the manual. (Innovative organizations always have involved leadership who understands the unstructured nature of creativity and facilitate this direction.)
2) The child might behave clueless at first, but show him once even the three piece structure done without the manual and see how she takes it further from there. (Besides providing vision, leaders know the importance of enablement.)
3) You won’t fail to notice the pride in her voice when she finally shows it to you. (It is of utmost importance to encourage and reward the effort, in however small or insignificant ways.)
4) You have kept the manual and she does refer it for the fundamentals like - what fits where, once in a while. (Building innovation culture efforts does not need to change the ways you run your company, however it might need a tweak here and a tweak there.)
Hiding them occasionally is what innovation seeking enterprises can DO with the LEGO set manuals.
ideaken team can help your enterprise in planning & implementing points 2,3 and 4 mentioned above and benefit from the power of co-creation and open innovation.