On the set of Karan Johar's My Name Is Khan, SRK surprised Sidharth Malhotra, Varun Dhawan and a dozen other assistant directors by buying them books they liked or ones he though would interest them.
He then wrote personalised notes in and signed each of the books. Sid says the book SRK gave him is one of his most treasured possessions till date. https://timesofindia.indiatimes.com/entertainment/bollywood/news-interviews/Sidharth-Malhotra-values-SRKs-gift/articleshow/19166650.cms

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