Jack in the Box.

No plugs, wires or batteries needed to have fun with a Jack in the Box. Just turn the crank, and watch for Jack to pop out.
Marbles.

Tom Sawyer and Huck Finn enjoyed a good game of Marbles. I bet the game would become popular again if you could play it on X box or play it online.
Typewriters

What do you mean there's no delete button? Where's the spell check? How do I use the chat?
Imagine the uproar it would cause if today's youth were asked to do their homework assignment on a typewriter instead of a computer.
Peddle Cars.

Yes, they ran on Kid Power, and not a 12 volt battery.
Roller Skates

No, they didn't have synthetic wheels, Velcro fasteners or anything fancy, but they didn't have to be replaced every year either. Just adjust the size and you were good to go.
Pogo Stick

Nope. No hand controls or game cartridges. But no chance of being called a couch potato if you had one of these either.
Record Players

The good old record player. A stationary unit that played a single vinyl disk played on both sides, producing all of your favorite hits with full rich sound. You couldn't walk around with one of these dangling out of your ears, oblivious to everything around you.
Dolls

Dolls that did not drive sports cars, have cell phones or come with their own lingerie. Dolls that a child could dress cuddle and play with. Without it having to be plugged into a USB port.