It is typically nice to send a present to a friend whatever the reason.  Showing that you care for anyone can be shown by giving gifts that mean something to the person who receives it.  Not many will beat that feeling when you witness a loved one grin with joy as they unwrap their present.  

To really make someone you care about happy, then try sending a thank you present to them.  A brilliant example of a good gift to buy for a family member is wedding candles.  Thanks to this very reason, usable and unrivaled gifts are looked after for almost a life time.  The beauty of a good gift is that the receiver will be reminded of you whenever they use it.