Looking for Advent devotions/study for teens

Hi,

I have just spent the last hour looking at Advent books for my kids, ages 13-18.  So far, I haven’t found but one that I am mildly interested in.

Anyone have some ideas for teen Advent?  We may do it as a family, or I may have the older ones do their own indendently since we all have such different schedules.  In any case, I am am willing to look at any suggestions from people on this board!!  🙂

thanks

pj