At this year's Eastercon, I did a mostly-aimed-at-kids (although we had a few adults along, too!) bookbinding workshop. Because I wanted it to be fairly short, and I didn't want to have glue everywhere, I came up with a multi-section pamphlet (if that isn't a contradiction in terms!) design.
The card cover is folded so that it has a small zig-zag at the spine, and then two sections are sewn all-along onto it, one on either side of the 'peak' in the cover.
Inside the sections
Between the sections
It seemed to go fairly well, other than the fact that I completely failed to post about it at the time!