All my talents are too obscure or something

One of the various things that we've been getting up and running at the church of late is a "women's group" - the old one sort of faded away when the leadership got burned out and no one stepped up to continue it, so we're trying again with a new approach. An ingredient in these once-a-month meetings (besides lots of tasty food and such) is a 'craft' or 'skill' teaching.  The women have been called upon to think of something they know how to do that they can teach to the others in about 45 minutes or less.

I have no such skills, apparently.

All I can think of are things like writing and singing and dancing - none of which work for this kind of thing.  I'm not really into little crafts and I can't teach art in such a short time to non-artists... History is too huge a topic, gardening doesn't translate to indoors... er... um...

Darn.  The only thing I can come up with at this point is maybe showing them how to clean and repair their books?? I feel so useless!  I don't think a chart about the convoluted timeline of Doctor Who will work here.   I wonder how I can work the Geek / Useless Trivia factor into this? 

As a side note, I did score a gorgeous green and silver hipscarf at a bellydance show this past weekend, so that was nice.