I lived through all of these and I remember thinking each one was the greatest thing of all time when they came out. My, how times have changed. I missed my beeper and typing in codes from a payphone.
Another great idea. I need to learn more as I see this as another way for students to learn critical thinking and problem solving without being at a computer, but going hands on and simply tinkering around
What a great challenge/thinking on your feet activity. This would be a fun activity to use in the homeroom setting or my blog as a book giveaway challenge