I can speculate on some possible reasons:
Friendship or Amicability: It's possible that your ex wants to maintain a friendly or amicable relationship with you. Giving a gift could be a way of showing that they still care about you and value your presence in their life, even if the romantic relationship has ended.
Closure or Guilt: Some people might give gifts to their ex-partners as a way to seek closure after a breakup or to alleviate any feelings of guilt they might have. It could be their way of trying to make amends for any hurt they may have caused during the relationship.
Wishing you well: Your ex might genuinely want the best for you and could be expressing their well-wishes through a gift. They may simply want to see you happy and thought a gift would be a nice gesture.
Nostalgia: Sometimes, giving a gift could be a result of nostalgia, especially if the relationship held significant emotional value. It might be a way for them to reminisce about the good times you had together.
Manipulation or Interest: While less common, some individuals might use gifts as a way to manipulate or rekindle a romantic interest. If this is the case, it's essential to be cautious and evaluate their intentions carefully.
It's important to remember that the true motivations behind someone's actions can be complex and varied. If you're unsure about why your ex wants to give you a gift or if you have any reservations about accepting it, consider having an open and honest conversation with them to gain clarity. Trust your instincts and prioritize your emotional well-being in any situation involving a past relationship.