Here is what you need:
- corn starch
- food coloring
Add a little more water and the magic mud turns into a slimy consistency that oozes through your fingers:
My kids (especially Nathan) thought that this was the coolest thing ever. And it was pretty cool...the magic mud looks like a liquid in the bowl, but you can make a semi-solid ball out of it, and then it liquefies right in your own hand. It cleans up surprisingly well. Nathan got a bunch on his clothes and it just hardened into a glob that I just took right off. When you are done, DON'T pour this down your disposal...I haven't tried it, but I don't think it would turn out good. I just poured it into a bag and threw it away. It also left my kid's hands a sickly green color...which they thought was neat.