If a toy is small enough that you can lift it, it can't really be any good.
Here are some toys I get to run that I can't lift:

The Best steam engine at Ardenwood Farms in Newark, CA:  Best #1 ; Best #2

The Bucyrus-Erie steam shovel belonging to a friend: Erie-1 ; Erie-2 ;  Erie-3 ;  Erie-4

Some locomotives at Silverbend just north of Clarksburg, CA:  No. 202 ;  A double header ;  The Edison loco
(Silverbend will be open all during October for Pumpkin Patch - train rides, pumpkins, great for kids)

If you like trains, but can't quite accomodate toy trains like those at Silverbend, try my pages on Grand Scale Railroads.
 
 

You can't lift a Pipe Organ either, so here are my Pipe organ pages.
 

To make things heavy enough not to be able to lift, you need an iron foundry. Here is my favorite: Sunset Foundry.