I - Hot Buttered Rum: I found a pre-made concoction at Safeway for, I think, $6 or $7. It's as simple as boiling some water, adding the mix; and the hardest part, deciding on a rum to add to it! I found Doorly's to be excellent!
II - David's Tea "Buttered Rum" tea is pretty good! Brew some tea, add some rum, sit, and enjoy! Lovely!