I think, he should get plenty of sleep and exercise. An alert mind is a high-functioning mind and one that’s less tolerant of time-wasting activities. So that, I want to buy for him a daily planner. But I need smth incredibly cool (and for 2019)!
There is a commercial running on TV right now (here in the U.S>) that shows a husband being told to sleep on the couch because he bought his wife a vacuum cleaner for Christmas. This sounds like much the same thing where you are buying him something that you feel he needs versus something that he might like or enjoy. Perhaps you should get him something else for Christmas and then get him the daily planner for New Year's Day so that he can make a resolution to get more sleep and exercise with this new tool.
I bought for a good set of tools https://mytoptools.com/best-impact-driver-reviews/ . This is his old dream. It's time to implement it.
Yep, I agree that a gift is worthwhile when the receiver loves it, not necessarily the giver. If those tools are his dream, then great job!
Now the question of gifts is one of the most acute) I think that a gift should be useful, necessary and multifunctional. Therefore, a pocket notebook is a good enough option) I use these notebooks https://onplanners.com/planners/best-hourly-planners myself, as they help me plan my time)
If you would like him to get plenty of exercise, why don't you get him a certificate for sport classes or something? Might be nice to give him a chance to try something new, some kind of activity he had never tried before. Or just a season ticket for a pool or skiing. Daily planners are nice, however, some people can't use them due to being too spontaneous or not that organised.. You know him well, are you sure he won't put it on the upper shelf and never touch it again?