It's not too late to get an awesome gift for the fitness buff in your life if you act fast and rush the shipping. I picked some of my favorite items/deals from around the web.
As far as activity trackers go, I like the Garmin Vivofit 2 with the chest strap heart rate monitor. This is the best tracker for the money for the person that is serious about improving his/her training performance. If you are just looking to increase activity level, then you may prefer the Fitbit for its syncing compatibility with smart phone apps like Lose It! and My Fitness Pal. If money is no object, then do your research on the reviews before making a purchase. The right activity tracker depends greatly on what you are wanting to track and how you plan to train.
The Woss Attack Trainer Suspension Training Kit is a must have for anyone who is training at home or anyone who has to travel a lot for work. Resistance bands are great, but suspension training seriously ups the core work and the calorie burn. You are probably more familiar with the TRX system, but the Woss kit has the quality for a fraction of the price. This suspension training kit includes a door anchor and mounting kit so that you can train anywhere. Mount it to a tree to train outside or use the door anchor to train in your hotel room. The kit comes with an exercise guide poster to show you how to work the total body.
Have a Merry Christmas and a Happy New Year!