My kids ages 10, 8, 5 and 3 LOVE looking for Christopher each morning.  THey get so excited when they find him.  Even my 10 year old wonders what he does each night when he moves.  They believe in his magic.  Sometimes the elf gets into a little mischief before finding his next hiding place.  Great tradition to begin!  At first they were a little spooked by him, now they love him!