Now that WoTLK Classic (version 3.4.3) has a Toy Box like Retail, could you port Toy Box Enhanced to WoTLK Classic? Thank you so much.

Honestly, I'm a bit surprised to see the Collections in Classic already. Originally the Toy Box was introduced in WoD. So I thought/hoped that I could postphone a classic version for a while longer.
Whelp, seems I was wrong. So I'm going to look into it. But it might take a while. :)

I've just whipped together a little working prototype.
Only problem is that I can't properly test it yet. I don't play classic. Therefore my DK has no toys yet. It's probably going to take a bit to collect a few. 🙈

You have two vendors of toys in Dalaran, if you find a mage to tp you there:

• Breanni https://www.wowhead.com/wotlk/npc=28951/breanni
• Jepetto Joybuzz https://www.wowhead.com/wotlk/npc=29478/jepetto-joybuzz

(toys don't yet appear as such in the Wowhead database, but they are indeed toys)

Wowhead for Retail is currently the best way to search for toys, with the "Added to expansion: WotLK, BC and none" filters.
https://www.wowhead.com/items?filter=216:166;1:3;0:0
https://www.wowhead.com/items?filter=216:166;1:2;0:0
https://www.wowhead.com/items?filter=216:166;1:1;0:0

Also an item identified as "Legion", Don Carlos' Famous Hat, but not X-52 Rocket Helmet or Chef's Hat.

Also, an innkeeper can have toys as rewards for a 6-month subscription:

• Goblin Gumbo Kettle: https://www.wowhead.com/wotlk/blue-tracker/news/us/world-of-warcraft-news-and-development-updates-23761710
• Imp in a Ball: https://www.wowhead.com/wotlk/news/world-of-warcraft-six-month-subscription-includes-imp-in-a-ball-toy-for-burning-322435

... and released. Thank you for your inspiration and help. 😃