Forgot to mention a new calculator and calculus text book. (hint, hint…)
Man oh man, are you serious?
I've taught countless sections of calculus in my time (college and university level). I used to tell my students that calculus is the doorway to higher mathematics. It is without question one of the most subtle and beautiful, yet useful, creations (or maybe discoveries - there's a continuing philosophical debate about this) of the human mind.
Sorry to sidetrack this thread, but the mention of calculus just got me all excited.
Hope you find a super good calc text under the Christmas tree.