sherlock: he gets you a blue scarf to match his on scarf.
John: he'll gets you a ring to show that you are his.
Mycroft: he'll gets you a car. because let's just face it he is rich:)
greg: he gets you a beautiful necklace

YOU ARE READING
sherlock preferences
Diversossherlock Preferences with Sherlock- John- Mycroft- Lestrade