I’ve been making wooden toys. Almost as scary as cribs.
I would say that as a rule, children that are still teething (usually ends at 2-1/2 to 3 years of age) should be kept away from wooden toys. That is probably not an option with cribs.
I would note that the Montessori stand that I pictured above carries a warning (on the original Montessori edition) that says, “Adult supervision required”. Again, not much chance of that for a crib.
I rely on the manufacturers’ claim of “non-toxic”. If there is ever an issue, I will point to the deep pockets of the manufacturer of the finish. That is not much protection if your project harms a friend’s child.
I see children’s pull toys with parachute cord for the child to pull the toy. If the string on Venetian blinds is a hanging hazard, parachute cord would be too.
Once you start thinking about safety, it can paralyze any project.