I See Webcam Fun
A great way to spend some time your younger nieces and nephews over a long distance is loading up Skype on your computer and get a webcam and headset (or micrphone)!
One of my favorite things to do when I get to talk with my honeys is play "I see - I see". Not sure if this is a game known worldwide, but it's a well known children's game in the Netherlands.
Look around in their view room through the webcam and pick an item or a 'thing' and say "I see, I see, what you can't see" and they can guess what item you're holding in mind. They get three turns to ask questions, each. For example, "What color is it?" "Is it a human or an object?".
Turn things around by letting them pick an object from your room!
It's great fun when they are still little, the bigger nieces and nephew will probably run away as soon as you suggest it!