My parents always let me wear one when I was younger. It might be a little dorkie but it is so convienient. I actually still use one. Disney sells nice ones at the parks if you are willing to wait. The good news about waistpacks are that not only are they not easy to lose (cause they are strapped to you lol) but they don't hurt your back either. Also they are handy when you need somewhere to put those hats and sunglasses. I hope this helped.
You know, I've been thinking about this very subject, but for us not our son. We have been carrying a backpack during each visit, and my wife likes to take nearly everything with her, so the backpack gets heavy. Since our son is old enough that we don't need to take emergency clothes anymore, we're going sans backpack this year. I thought about a waist pack, but most of the ones I've seen are really big. However, I did a search just now and found Amphipod. They have all kinds of sizes, and they're not very expensive. I'm thinking of the Airflow Lite or Airflow Vis Lite may be perfect. Not huge and from what I've read, they get good reviews.
http://www.amphipod.com/products/holders/music/electronics/airflow-lite
http://www.amphipod.com/products/holders/music/electronics/airflow-viz-lite
Seems like these would be small enough that a t-shirt would hide them too.
They do have large ones too, if you're looking for something bigger
http://www.amphipod.com/products/holders/airflow-waistpacks
It'd be a great idea if it was 1986.
But here in 2012, they're a major faux pas.
What about a cross-body camera bag (not sure what the technical name would be)? Not a large one but one that would be able to hold the things he needs.
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