IKEA miniatures. Does anyone know them?

Hello, I found a funny attic discovery. Ikea miniatures. What can I do with them? Does anyone know anything about them? Thanks in advance for the info and best regards unknown to you! :)

... What can I do with it?

Put it in your display case or list it on eBay, some people pay good money for that.

Thank you for your answer. What is the [Bucht]?

e bay

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:D
Thank you!