Maybe some inspiration in this one: https://www.lfgss.com/comments/16719002/
Believe it's had a 2x7 on it
Yep, that's the Sun xcd 120 mm cassette hub with a 9 speed block without the two smallest ones, so it is a 7 speed 14-32 if I remember correctly. Bar end shifters. Pretty simple, but indeed might still not be worth the trouble for just a few rides.
@Samuli started
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Maybe some inspiration in this one:
https://www.lfgss.com/comments/16719002/
Believe it's had a 2x7 on it