Thanks, Dad! We got your package.
The mad scientists in the house are very excited this morning. I think I heard the words "dry ice bomb" yelled before the sun came up -- this activity will be in the not too far off future. Then there is this one, or this one. Hmmmm! Lots of exploding going on in the future. However, there is non-exploding fun to be had, as well, sSuch as floating and sinking and mini icebergs. The experiment possibilities go on and on.
Some of the film cans will be saved for a weight set for our balance scale. Loads of fun to come. Well, I better go hide them and explain to the kids that these film cans are becoming an extinct commodity and must be recycled and cared for. In other words, "Don't take them out in the yard and lose them!"