Khreshchatyk is both a historical place and a busy shopping street. It connects European Square with Bessarabian Square and is blocked for traffic on weekends when you can enjoy a nice walk along this street. The Central Department Store is located directly in the central street of the capital and has lots of departments. It has always attracted crowds of people. There are a lot of other modern shops in Khreshchatyk - just go into one of them, choose whatever you like, pay and go! So easy! I wish you happy shopping, friends!
Maybe Ukrainian souvenirs (Leo Tolstoy Square).
UAH - Ukrainian Hryvnya; about $100 to buy a good thing.