dave..i liked that a lot.Thanks.Did small scale things like that when i was a lot younger,back in the 60's.Go out into my grandfather's garage an set up "Rub Goldberg" contraptions.Had "marble rolls"in our desks in elementary school(lined the inside of the desk with construction paper to make it quiet and situated the books so as the marble would drop out the hole in the bottom...pass the time away in the "boring times" of class).Good ,fun times then."Elementary" compared to some of the things i've seen now,but still fun to construct and "let go".Domino's and Hot Wheels cars were also incorporated in the melee of fun(we had a two story house so we had more area and stairs to utilize...way too much fun for us kids then,expecially when you get other friends to bring their Hot Wheels tracks and stuff over to make it even longer and bigger).Great fun on those rainy days when we couldn't start it outside.Lt