Of a long list, three things that have improved my quality of life come to mind at the moment:
Apple Watch - among other things, it has helped me to measurably increase my overall level of physical activity. Coupled with my iPhone, it is an awesome tool. No pic, as you know what they look like.
LL Bean Original Field Coat - a three season longish canvas coat, in green. My SO gave it to me as a birthday or christmas present, can’t remember, and it’s easily my favorite piece of clothing. I wear it around the farm, in town, and to work in the office. It resists abrasion and does not readily show dirt. I think it’s stylish, in a rural, basic, and functional sort of way. Kind of like Carhartt clothes. Odd as it may sound, it gives me great pleasure to wear it.
A performance sedan - certainly not the fastest, most expensive, best looking, or whatever, but to me it looks and drives wonderfully. I admire it anytime I walk out to the yard; after parking it at a store, I usually turn around and glance back at it. It brings a smile to my face when I’m behind the wheel, driving and sometimes, though not always, listening to its pretty decent sound system. With a recent modification to the power plant, it does what it did in even more robust fashion.
As for a bidet, after reading the comments here, and watching a video on savage geese, of all places, I can easily see having one
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I should add that the art - prints, and one original oil on canvas painting - would be right up there as well.