These can be for permanant career employee positions who have the necessary security-enhanced equipment or for those who do not handle personally identifiable information.
Higher-level employees, managers, supervisore, SES folks do not NEED higher-quality furniture (real oak, etc.). Make them get the same standard furniture as all government employees. Of course, they may need different furniture, or more, depending on their position, but not better.
Of course, this would decrease the amount of retirement that person would receive. It would also, allow newer people (who are generally paid less) to advance professionally.