[Find a single authority or court decision that holds that illicit drug use is an unemumerated right under the Ninth Amendment.]Which part of "Here is a Supreme Court decision rejecting the extension of the Interstate Commerce Clause to 'closely connected' intrastate commerce" did you not understand? Without that extension---which you have often voiced support for---the Controlled Substances Act, cornerstone of the federal War On Some Drugs, crumbles to dust, making the Ninth Amendment argument moot.
The state can tax the mining operation even if most of the product went to other states. If there was no federal restriction on marijuana, a state could still prohibit its local production even if the bulk of the marijuana produced went into other states.
You don't even have a pair.