Although I remember the roof scene with the dancing reindeer quite vividly, I can't find any record that it actually existed in the 80s'90s version of "Tinker's Toy Factory" (Called "Santa's Toy Factory" back then), but I did find this. it's a 1992 show called "Santa's Christmas Wish" which has the scene as I remembered it (stars overhead in the night sky) except it's two dancers dressed like snow flakes instead of reindeer. They still use that mad cap puppet technique were the performers are invisible wearing all black body suits and the snow flakes are fluorescent lit with a black light. I'm probably getting the two shows crossed in my memory, even though I remember "Santa's Toy Factory" but have no memory of ever watching "Santa's Christmas Wish." You can see the dancing snow flakes around the 11:08 minute mark.