The Golden Bat tin wind-up toy from Billiken.

Now, I'm no expert on cuneiform script, like, I don't even know a little bit, and to me these just look like no more than a "good enough" artistic embellishment on Kaneko's part.

From here

This is similar to the question of "what's written on Seraphs's fans?"

And the answer to that question was also "nonsense, but it kinda resembled something legit."

I would go so far as to say the only language/script on a Kaneko design that is actually going to be meaningful is Japanese, considering it's his native language, and maybe some basic English.

On the left here we see the kanji on Uwabami's pot, which is 酒 (alcohol/sake), alluding to a connotation of the name in Japanese. On the right is Enku's bib, which reads 焰, "blazing" and can even be pronounced as "En."

Doing research for a leisure project by examining magazines from Argentina, I detoured to one from the 70s and had a good chuckle at this page. I thought ashtrays as a gift was more or less a joke, but then you have a child gifting it like a handmade card lol