Are you looking for an affordable science experiment to do with the children? Here's one that's not only affordable, but that will teach you how to make a batch of homemade quicksand by using a few ...

Although horror films frequently depict victims disappearing in quicksand, the truth is much tamer. People cannot fully sink into this type of soil, and laboratory simulations now bear out this little ...

Makes me think of MythBusters, where they tried to run on a cornstarch mixture that sounds just like what they used here. There's also insects that walk on water by taking advantage of surface tension ...