Jewellery arrives quickly and looks more expensive than it costs which makes it reliable last-minute territory. A simple necklace, bracelet, or earrings in a good metal finish or stone that works with everything. The key is something she can wear immediately and will reach for regularly rather than save for best. Gold, silver, pearl, gemstone options all deliver well and feel intentional. Minimal design works best because it does not require knowing her exact style preferences.