My oldest, my Super Bear just turned 7 years old! He is into Secret Agent and Spy stuff. When he settled on that for his birthday party theme, I was not surprised at all. We determined that we would need some serious spy games to play and a cool secret mission. When the kids arrived at the door, they were greeted with a sign that said, "International Spy School. Knock twice to enter".
We gave each child a secret agent notebooks to record all of their findings while they were in Spy School. Then our first training mission began with testing our taste senses. Each agent-in-training got a film canister (left over from the space party a couple of years ago) filled with different flavors of round candy. They had to taste each one and record what flavor they thought each was.
We tested their powers of observation with a tray full of little items and then covered it up while they wrote down as many as they could remember. I was amazed at how well they did at this test. I have no memory at all.