Holiday gift ideas for baseball cond/training?

I guess the name of the topic is self explanatory

Any ideas for stocking stuffers and/or 'real gifts' for getting 'baseball smarter?' in the upcoming long cold winter months?

Any motivational / informative books?

How about gadgets you love and know work well in the basement as opposed to outside (...as the temps drop down to 10 and the snow flies outside!)

Thanks!