I found these ‘kits for adults’ at Toy Fair. It’s not a toy, but a fun, and to my mind, really complicated building kit for adults.

Train Station Book-Nook w/LED Light.
The spokesperson says it should take about 15 hours to build one, but looking at the completed models, that sounds pretty fast. Basically, after they’re built, your Book Nook can be displayed on shelves, with or without books. As you’ll see on this week’s show, they are very, very detailed models and many are complete with LED lighting to help show them off. The average kit is about $40 to $45.
Giz Wiz Video: https://youtu.be/fqpcmyioHLI
Book Nooks on Amazon: https://amzn.to/4bGDSnX
A more elaborate train kit on Amazon: https://amzn.to/41BiwDK
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See or hear this show: www.gizwiz.tv/episode/2032