Here are some examples:
* Mildly interesting: Something that piques your curiosity but doesn't completely grab your attention.
* Mildly spicy: Food that has a hint of spice but isn't overly hot.
* Mildly annoyed: Feeling a little irritated but not overly angry.
* Mildly successful: Achieving some success but not reaching great heights.
Essentially, "mildly" suggests something that is not strong, intense, or extreme.