These things are not considered the best present for a Russian. Scarves, for example, are an omen of tears, knives an omen of enemies, and clocks an omen of parting. Even if you are prepared to give a Russian girl a scarf as a present, she would prefer to buy it herself, if only to save herself the tears. If you do give somebody one of these things, do not be surprised if they give you a small coin in return. This is to create the illusion of buying the item. You must definitely take this coin, even if it surprises you that they are trying to pay you for an expensive gift with small change.