tune-up. every other option on the list will do nothing for performance.
As far as the investment option goes, a few hundred in a Roth IRA, come your retirement age, should be almost enough cash for a week's worth of groceries.
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"The genius of any slave system is found in the dynamics which isolate slaves from each other, obscure the reality of a common condition, and make united rebellion against the oppressor inconceivable." ~Andrea Dworkin
"If... the machine of government... is of such a nature that it requires you to be the agent of injustice to another, then, I say, break the law." ~Henry David Thoreau, 1849
That's right, bitches, TWO quotes!