Dear Nikola,
As of October 12, 2023, WikiKids - a Dutch-language children's encyclopedia - has a Wikidata property (P12086). I am currently working to find ways to add WikiKids IDs to Wikidata items, as, for example, this item has. When I clicked on a random item through this link a moment ago, I found out that the user Tinker Bell had added the French Vikidia ID to an item. She did this via batch #25723 (I had never heard of "batches" before). Right above that, I saw that you had added the Microsoft Academic ID to that one item using batch #25586. That's how I found you.
On the Wikimedia Forum, I made a call for adding interwiki links to WikiKids, but unfortunately I haven't been able to find anyone yet. So my question to you is: could you perhaps create a batch that links WikiKids IDs to Wikidata items? Or do you know someone who would be willing to do this? Or else, could you explain to me how to do this myself?
I look forward to hearing from you!
Kind regards,
Sander