The dupe target does care about items.
The dupe target asks, without restricting the scope to any one category of features:
Are there any ways you have used to mitigate this flaw?
This means the question is properly concerned with any game feature that solves the problem of Sunlight Sensitivity, and to quote the Dungeon Master's Guide:
Game features include spells, class features, feats, racial traits, monster abilities, and magic items.
Consequently, this answer provides a correct and complete response to your question:
The Waterdeep: Dragon Heist adventure (p. 191) has the Knave’s Eye Patch magic item:
Wondrous item, rare (requires attunement)
While wearing this eye patch, you gain these benefits:
- You have advantage on Wisdom (Perception) checks that rely on sight.
- If you have the Sunlight Sensitivity trait, you are unaffected by the trait.
- You are immune to magic that allows other creatures to read your thoughts or determine whether you are lying. Creatures can communicate telepathically with you only if you allow it.
This item would remove all Sunlight Sensitivity effects at the cost of an attunement slot.
Before your question was closed, I did provide an answer, in which I have included the following justification for the uniqueness of the Knave's eye Patch, as well as included it in the relevant answer to the dupe target:
I am quite confident that this is the only official item with this effect. It is the only item that comes up in a DND Beyond search for "sunlight sensitivity", and based on some search engine sleuthing, discussions of similar items prior to the release of Dragon Heist revolved around homebrewing items to deal with this, while discussions after the release of Dragon Heist never mention any items but this one.
Given these things, I'm not seeing how your question is different, or that it hasn't been answered.
Our duplicate criteria.
Our guidance for closing duplicate questions can be found here. In particular there are three criteria that we use:
It's the same question, or Question A is already covered obviously as a subset of Question B. Obvious here means I can tell at a glance it's there.
Question B has an obvious answer to Question A. Obvious here means I get a straightforward answer without hard searching — a couple of sentences buried in the middle of a post, or an answer which only sort of implies an answer to Question A, doesn't count as obvious.
There is not some strong compelling reason to covering Question A alone, separately from Question B. (If the above bullet points are met this rarely happens.)
I've explained above that the dupe target is actually concerned with items that can solve the problem. This means that your question is covered as an obvious subset of the target. Additionally, I have pointed to the answer that directly addresses your specific situation on the dupe target. Therefore, the first two criteria are satisfied.
On the third criterion, I'm not seeing a reason, so it is up to you to provide the reason your question should remain open, despite the first two criteria being satisfied.