X-link to the DRM-free megathread for a bundle which may be of interest to Star Wars fans who have kids in their lives:
Humble Book Bundle Origami Yoda features a set of sixth-grade schoolboy adventure novels by Tom Angleberger, centred around a boy whose imaginary best friend is the titular origami Yoda, who has a rich inner life with a lot of Star Wars references in it. There's also instructions for folding your own Star Wars origami on the series' official website.