Ha! That's exactly what I just asked my wife for today when she told me her father wanted to know what I want for Christmas. When she said that he wouldn't do that, I told her to have him just send money, then I can use it to get to this seminar!
Some other ideas might be to start making a room to train in, or some training equipment that he can use if he doesn't feel like going to the gym. A power rack is a bit expensive, but I think it's the single best investment for a home gym (along with a bar and some weights of course).