Zhè tiáo wéijīn shì nǎinai liúgěi wǒ de niànxiangr.
This scarf is a keepsake my grandmother left me.
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Northern colloquial, especially Beijing dialect. The 儿 (r) is essential - 念想 without it sounds awkward. Always carries warmth: a thing or memory you keep around because someone or somewhere mattered.