I'm pretty sure My Boy will be getting a Junior Tinker Toy Building Set for Christmas this year. As far as I'm concerned, Tinker Toys should be a part of every childhood. They also have the classic Jumbo Tin, if you're looking for something a bit more complex.
My sister and I used to have so much fun playing Squeezed Out at my grandparents' house. It would make a great party game if you need something new for your next get-together.
And since Toy Story is the current favorite at our house, I just wanted to give a quick shout out to Slinky Dog. He's just too cute!
I love the lack of electronics...all you need to use these toys is good old fashioned imagination. It's so hard to narrow down my favorites; there just are so many that we absolutely need at our house!