^ The self inflating balloon experiment. I made labels for empty bottles and pre filled them with vinegar and added baking soda into balloons and carefully put them on the bottle top as to not spill the baking soda in the. When the kids got there they could lift the balloon spilling the soda into the vinegar causing a cool reaction.
^ The slime making experiment was a huge party hit and made a great party gift
A bought the specimen jars off of amazon.com for just a few bucks.
Then we measured out the ingredients for each kid before the party and let them mix them together and add their choice of food color. Here is an easy slime recipe http://chemistry.about.com/od/chemistryactivities/ss/slimerecipe_2.htm
^her cake was awesome we got it at winco with a space scene they had in their book. Another option is that you can take any photo and have it printed on icing.
I also found a set of neon colored test tubes on amazon that I filled with nerds and Petri dishes that I filled with jello and topped with gummy worms to look like a bacteria culture.
This is one of the funnest birthday parties I have thrown, and with the great finds from amazon and making everything else it really ended up not costing very much in the end. I hope to inspire and if anyone needs the bottle labels template just let me know. I'm happy to share.