How to make slime using laundry detergent! A NEW recipe for slime making from Fun at Home with Kids that uses neither borax nor liquid starch. You can find the necessary ingredients in the UK and Canada as well as in the US.
DIY Amazing Density Tower from Things Found in Your Kitchen by stevespanglerscience: Make objects float in the middle of a liquid with this amazing trick. The idea is cool, but you need a tall glass (a vase?) and lots of each liquid to make it look good.
For the Density Unit- Creating a density tower to teach my grade 8 science class about density, fluids, flotation, and even viscosity! We also had some Shirley Temples to show the real-world application of floating fluids!