What are some items that the Artificers Magic Item Savant feature allows them to attune to or use?

The Artificer’s Magic Item Savant feature states:

[…] You ignore all class, race, spell, and level requirements on attuning to or using magic items.

Class and race requirements are relatively intuitive and since an Artificer would already be able to cast spells they can already attune to items that require you to be a spellcaster. But what about using a spell scroll for a spell that is not on their spell list? Additionally, are there examples of items with spell and level requirements that an Artificer otherwise couldn’t attune to?