What do you give someone for Tet?

As a professional practitioner in the field of cryptocurrency and finance, I often encounter people asking me cultural questions like "What do you give someone for Tet?" With Tet, the Vietnamese New Year, being a significant holiday, the questioner is likely curious about the traditional gifts exchanged during this festive period. A typical response from a questioner might be: "I've heard that Tet is a big celebration in Vietnam, and people exchange gifts to mark the occasion. But as someone who's not from that culture, I'm not sure what's appropriate to give. Could you tell me, in your experience, what are some common gifts given during Tet? Are there any specific items or themes that are traditionally associated with this holiday?