Apple devotees are the hardest people to gift — not because they don't want things, but because they have opinions about everything you could possibly buy them. Gift them a non-MFi cable and they'll quietly replace it the same week. Gift them a case that blocks their MagSafe and you've made an enemy.
What actually works is gifting things that extend the ecosystem they've already invested in, not things that compete with it. A second MagSafe charger for the desk when the nightstand one is already claimed. A 3-in-1 stand that finally solves the three-cable-on-the-nightstand problem. AirTags for their keys and bag because they keep misplacing both and refuse to admit it.
The other category that lands well: things they'd buy for themselves eventually but keep postponing because the price feels hard to justify alone. Apple MagSafe Wallet. Peak Design sling bag. Braided Solo Loop band. These are gifts that feel aspirational to receive because the person would never push that purchase button on their own.
In India, Croma and Tata CLiQ are worth checking for Apple and premium third-party accessories — they sometimes have better availability on new-launch accessories than Amazon's third-party sellers, and returns are easier for model-specific items like cases and screen protectors. Always confirm the iPhone model before anything model-specific. That one check saves the entire gift.