Casalino found a maker of a toy reproduction of the whip top from Tutankhamen's grave!:
https://johnnyworldproducts.com/collections/ancient-toysI also ordered one, for just $13 and free shipping, that I received today.
This is a children's toy, not a museum reproduction. Here is a photo of the real King Tut top, that we discussed before:
Not only the toy version has the inlaid simulated by painting, but the spacing is wrong. The ivory squares on the original are separated by black inlaid squares of the same size, while on the toy the white squares have much larger separations. And the grooves do not coincide. On the other hand, the shape is similar and works very well as a whip top. It may be bigger than the original: it's 6.1 cm tall while one reference says that Tut's top is 4.9 cm. The box comes with a string and has no mention that the top was a whip top.
EDIT: Just found it on Amazon for $10:
link. The description there says that the original will soon be on exhibit for the first time at the new Grand Egyptian Museum in Giza. I believe Casalino told me that he already saw it in person in Egypt.