I find that concentrating on tasks that have no priority whatsoever keeps things the least interesting.

For example, I enjoy having candles lit while I work. Unfortunately, some candles burn faster than others, leaving large empty carcases of wax, which I then break into pieces with my fingers and use to supplement the still-burning candles, thus increasing their lifespan and, ultimately, their utility for me.
Of course, sometimes one adds too much wax to a candle and risks having it go out.
It is certainly best to keep an eye on the candles.
It is pleasurable, even, to keep a constant eye on the candles, simply watching the wax melt for hours while doing no work at all.

As I said, sometimes tasks with the lowest levels of utility are the most satisfyingly dull.

Sometimes I listen to music while I do this task. Sometimes I just sit smoking cigarettes and occassionally getting up to pee.