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Did you mention the dimensions? The ruler would indicate total length around a foot - that is very small, even for a child; would be classed as a...
If it was round, and the right size, I might suggest operculum, similar to this ring: [ATTACH]
I don't think oak, looks to me like some other hardwood, but beyond that, IDK.
Welcome! We've got some standard advice on posting photos....let's see if someone can find it for you....
Are we sure it is a monkey? Perhaps a hyena? It might be depicting a female, which Hanuman was not. Perhaps giving birth to...something. That is...
"dagger" I'd say is a fantasy item, not native; the other is perhaps a camel-whip or prod; I'd be thinking Middle East.
If it is impossible to tell whether it was carved to represent an owl, or a cicada, or a scarab...then maybe it is just imagination that makes it...
I'll offer a skeptical viewpoint: I think it is just a rock. The carved Chinese items linked above look like carvings; this does not, and does not...
I like "onyx." But I could be wrong.
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