Hot toys through the years....remember these?

Every year, certain toys capture the imagination of kids across the country and become "must-have" Christmas gifts. The toys -- and the prices of these toys -- have changed drastically through the years.

Here's a rundown of some of the toys and their prices through the years:

1940s -- Wooden Pull Along Walking Dog: $1.29

1940s -- World War II Model Planes: $1.00

1950s -- Metal Fire Truck: $2.49

1960s -- Troll Dolls: $1.44

1960s -- Mousetrap Game: $3.99

1970s -- Simon Game: $14.99

1970s -- Atari 400 Home Computer: $494.95

1980s -- Mr. and Mrs. Potato Head: $4.77

1980s -- Pound Puppies: $17.99

1990s -- Tickle Me Elmo: $27.99

1990s -- Tamagachi: $9.99

2000s -- Zhu Zhu Hamster: $8.79

2000s -- iPod Nano: $129.99