Or at any rate, things that have made me happy recently, even if they aren't absolute all time top favourites.
Pausing to stand under a cascade of pink blossoms spilling over a fence on the way back from the supermarket.
Finding that an example I made to help some students has osmosed into nearly every workbook in the group.
Eating a perfectly ripe plum after a long afternoon.
Having my own keys to [parts of] the Physics department.
Lying on my bed with a supersized mug of milky tea.
Working out a proof until it suddenly blossoms into understanding of the general case.
Finding a skirt that hits at the ankle even if you're tall and high-waisted, marked down from the markdown price.
Watching and helping a student 'get' a new concept.
Scheming to make homemade hamburgers and chips on Friday night.
Drawing Koch snowflakes until the iterations get smaller than my pen strokes.
There are moments on the other end of the scale too, of course, but life is good.