Finishing wooden childrens toys, how to get a darker color? Is there anything besides linseed oil or mineral?

I am using mineral oil but thought if I could use oils that would darken/stay the same color on different parts it would be neat, I can only do edible ones as my 7 mo old chews on everything
I am using food grade mineral oil and fresh linseed oil(gotta go to the store for that one still only in health places) both are highly edible and are what the organic wood toy manufacturers use, thanks for the ideas I will look them up

Sassy Earth Brights Wooden Dove

I’m surprised to read the many positive reviews of this toy on the site. My baby shows little interest in this, as well as the other Sassy wooden toys I purchased for her.

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Sassy Earth Brights Wooden Dove

Clockwork 101 from Djeco

It is a wooden toy which is safe for baby and they will play and have some knowledge about watches by playing it. It is very glamorous and good looking toy with multi coloured animals. Here Djeco made different types of animals in this …

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Clockwork 101 from Djeco