I take everything down as soon after New Year's Day that I can.
Me too. This year it came down on Sunday. We still had to put away the boxes a few days after.
I decided that next year we will only put up the tree and the lighted garland on the staircase. I have so many Christmas Chotchkies, that they take the most time to pack and wrap. I packed up everything in a very organized manner so that the order they are to come out, like the lights go on the tree first, garland next, decs after that... are all in one box.
We put our tree up the last weekend before Christmas. It all depends on how Christmas and the weekends prior to it fall. I don't even go looking for a tree until around the 15th at the very least. I think we put ours up the Sunday before Christmas this year which would have been the 20th.
As for Xmas lights, I disabled the timers on the front after new years, although I have a little pine tree pot on the front step that I left lit. The lights won't come down for several months as we're in a huge deep freeze and it would be dangerous to do so. Until we get some sort of thaw, they are up but not lit.