We all know that Mokona has 108 secret abilities, but we don't know what most of them are.
The other day, I was talking to a friend about a Chinese clasical novel, the Water Margin, and he mentioned that there were 108 heroes in the story, each with an unique ability, and I noticed that CLAMP might have got their idea from there.
I mean, they've included a lot of Chinese stuff in their works, like Syaoran and Fei-Wong Reed's name as well as the Daoist symbol on Syaoran's magic board. It's possible that the Water Margin is an influence on Mokona's abilities. Or I've just got it completely wrong.
Anyway, here's an English site on the heroes, decide for yourself:
http://www.geocities.com/nguyenvfr/English/herosx.html