No one knows anything (or cares to answer).
So here is what I have found. Although I found nothing as wonderful as this website, with lists printable and downloadable in .csv format, I did find a couple of smart sites that can be used to assist with Toy Collecting.
WoWThing works like SimC / Raidbots: install an addon,
upload a file (.../World of Warcraft/_retail_/WTF/Account/[Your Account Name]/SavedVariables/
WoWthing_Collector.lua. This will update the website and show you your character and a wealth of other information offline. Toys are listed too and you can filter out Missing or Collected.
SimpleArmory works in a similar way, you
copy the output of an addon in game and
paste that into the SimpleArmory website (more closely analogous to SimC/Raidbots).
Both sites display things in slightly different ways, I preferred WoWThings way of doing it. YMMV Neither of these sites is perfect, they lack an export function to easily compile lists of toys you're collecting, but they are a great help...more so if you can have them on-screen while playing WoW (in a two monitor environment for example).
I hope someone finds this helpful as I did some graft finding and sorting various resources before finding these two.
