Toy suggestions for a nearly 4 year old?

[Ole]

I had a clear out of my son's babyish and broken toys over the weekend and now it is looking a little empty! Suggestions for brilliant toys that will keep him entertained for hours? He is 3.5 now but I'd prefer to get him stuff that he is not going to grow out of soon. He is into typical boy stuff (pirates, knights, fire engines), he used to love his Brio trains and track but he hasn't played with it in ages and I wonder if he has outgrown it?

[melbourne groover]

Playmobile, that stuff is great. Loads of it (not all) can go in the bath or paddling pool and the bits all mix in together to form even better creations.

Or Lego....

[Helen GV]

Stickle bricks and mobilo are good too, my 4 year old likes them both a lot, as do his uncles when they come to visit ;0)

[Fuschia]

A remote controlled car...

[keane]

A proper castle? We got one when eldest was 3 and he played with it for years & now his brother who is 5 plays with it so its been good & I can chuck all the knights & battle figures in there so it's kind of like a battle storage box too!

The hot wheels loop the loop is good too if u have lots of matchbox type cars & the other thing we have that they have both played with is a multi layer garage.