Ticklebug is now 6 and is accumulating quite a few Hotwheels. Needless to say they aren't so "hot" when they are scattered on the floor in the middle of the room.
My solution is a plastic toolbox that he can store, organize and tote around if he so chooses. Because of the deep base he can also fit the car carrier in.
Talk about a good deal for $5 or $10! I got this in December at Home Depot but I can't find it on their website. This is a similar one. I would go for plastic rather than metal for the noise factor. Tool boxes come in all sizes so you could find a size that fits your collection.
If you need to keep him busy longer, turn it into a project of decorating it with stickers, paint or Sharpies-- depending of course on your level of sanity that day.
What storage works for you?
Head on over to Shannon at Rocks In My Dryer for more great tips!