There are lots of things you can get your dad for christmas. It depends on your dad's interest. If he likes fishing, you can get him fishing equipment. For an on the go dad that likes business, you can get him a brief case. If your dad likes to fix things, then you should get him a big tool set or drill set. Some dads like cleaning the yard, well you can get him a garden tool set and some great yard clean up tools. Golf dads love great golf sets. Also it depends on your budget. Great gifts are cars, motorbikes, houses, boats, jewelry, and something you can engrave , like picture frames with a family photo.
I can tell you everything that a normal dad probably wouldnt want... so stuff to avoid... lol Its probably a bad idea to give him those pink sweatpants that have "PINK" emblazoned on the butt.... And If your Dad likes music...Dont get him anything thats in the hip-hop/Pop scene from the last 5 years. I havent heard of one dad that likes and listens to Justin Beiber or Lady Gaga.... Lol..... this isnt helping much is it?