In June I will attend a workshop to build a chair designed by the italian designer Enzo Mari. In 1974 he published the first edition of Autoprogettazione, a manual which includes a number of furniture projects that can be made by anyone with access to hammer, nails and wooden boards.
I downloaded a PDF-version of the book a long time ago, but never got round to realize any of the projects. I am looking forward to trying it out.
To know more about Enzo Mari and his thoughts you can watch this interview.