Quick crafts for teenages-early twenties?

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Hi all, I've been asked to run a lunchtime (one off) craft class for college students in about a month as part of an event. Has anyone got any ideas for a quick hands on craft that would be good to teach (particularly the guys)? I'll bring the badge maker out but I'm keen for some other ideas.....

And so, this isn't text only, here's some of my latest gloves: