Explore the science and history of the winter solstice and other ancient winter traditions on the Solstice site. It's interesting reading and you're bound to glean some ideas of things to do (and sing) during the night while you're keeping the Yule log burning.
Tool or Gardening Product
Folding Pruning Saw
With a blade that folds down into the handle, a folding pruning saw is very handy and portable. Mine does double-duty in the landscape and on camping trips, where you might need to saw up fallen branches for a campfire. Felco makes a durable one for around $25, and lower-priced models are available. I received one as a gift, and I've given them as gifts, too. If you have a gardener still to buy for, it might be just the ticket.