It was mildly interesting to hear this repertoire played on period instruments such as wooden flutes and narrow-bore brass.

She spoke of the whole episode as if it had been a mildly interesting excursion to a provincial library.

It gives us mildly interesting backstage access, but no revelations.

It might be a nice story up to that point, or even mildly interesting.

But it would be odd, statistically, if you found none of them even mildly interesting.