thinking ball

The kids made up a new favorite game.
In between every activity or game they play, they now do "Thinking Ball".
They get this one certain ball and sit across the room from each other on the floor. They then roll it back and forth to each other and the rules are (and they actually did sit down and make up rules the other day);

1. no talking unless you have the ball
2. every time you get the ball you give an idea of something to do
3. you then roll the ball to the other player
4. play continues until one player yells "let's do it!" on his or her turn following the most appealing suggestion

example of most recent game played out in front of me just now:

"Sawyer, let's play Thinking Ball!"
each get situated
"play puppy", roll...
"work on art books", roll...
"go fish", roll...
"marbles", roll...
"Zingo",, roll...
"walkie talkies", roll...
"walkie talkies in the fort", roll...
"let's do it!!"
and they both immediately get up and head down to the blanket fort in the basement.

They've so far done this no less than four times today.