Start'em early! I would recommend Bulova or Benrus first though - a little more conducive to a toddler's allowance.
Prior to this recent omega fetish, I can only remember owning two watches, a Guess I got for my 13th birthday and a Casio I picked up on the streets in KL.
The Casio you had, possesses a great deal of honesty and originality in its design, neither of which are abundant in the Aximum or Invicta lines
You're very lucky that the Casio was the only thing you picked up on the streets of KL! Nice pics, and excellent conditioning/imprinting. You'll have an ally in no time Regards Desmond