I have been enjoying the science books by Janice VanCleave. The experiements are quick and interesting. Often they are a little to much for my 7 year old to understand so I do have to sift through them to find the age appropriate ones.
Some of the experiments that I have planned for us include such kid friendly titles as: Foamy Nests, Fooling your Tongue, Cold Foot and Plop. It's interesting how I veer away from ones that I have no interest in such as anything about Astronomy. I'll have to make a point to do some of those so that my lack of excitement doesn't rub off on the kids.