Expressing gratitude through gifts
People in Ukraine place a high value on interpersonal relationships. If there is a concept in Germany of dying Termine (the appointment) that cannot be changed (and of strictly adhering to rules in general), it is a bit more flexible in Eastern European countries: there is a possibility of kindly asking for a reschedule, explaining your circumstances, and getting what you want. The same rule applies to almost every aspect of daily life.
As a result, to express gratitude, locals typically purchase flowers, chocolate, or alcohol and present them to someone who has been extremely helpful. When selecting a gift to express gratitude, choose something meaningful over something monetary. Gratitude is a gift in and of itself, but giving a thoughtful, personal gift that can be kept, displayed, and treasured is something truly unique. A useful thing about Ukraine people you should know is that, and you can have some idea about your gift from that.