X-link to the DRM-free megathread for a bundle of interest to DIY home science enthusiasts:
Humble Book Bundle DIY presented by Make contains a lot of compilations of the magazine's assorted how-to articles, both high and low tech (there's a DIY like the pioneers volume which teaches you how to make your own soap out of bacon fat, among other things), as well as a history of the popular steampunk subgenre of science fiction and accompanying design aesthetic, and a history on the patent process of inventions surrounding mousetrap designs.
Topics covered include robotics, astronomy, forensic science, and more. There's even a vintage home laboratory handbook with new annotations (and actual safety precautions) for Gentle Readers who wish to know more about how the kiddies were expected to self-teach themselves in the 1960s.