Now this is a great way to freak out your friends and relatives.

It is also a real science experiment, using salt as a fuel to make the spider move.
First build the spider then be amazed that by adding just a few drops of salt water the spider will come alive and move along in a frightening manner. 

Note - this spider looks enormous in the picture but it is really more like the size of the real thing.

Recommended for ages 8 - 12 years