We picked up a handheld Celestron digital ~$60us to connect to DS' laptop: http://www.amazon.com/Celestron-Del...766&sr=1-1&keywords=celestron+microscope

It is pretty cool and we can do rocks and some smaller items. And having it up on the screen, it is easy to take snapshots and to discuss things together. However, it only goes to 150x and doesn't have all the cool slides that a full kit has.