Add a section to all US government employees' appraisals for the employee and their supervisor to document how the employee has saved money or energy without reducing the quality of their work or their office's work. In any organization what you measure and reward will grow. Often employees have a chance to save the government money or energy, but they are not incentivized. It may be a hassle for them to go the extra mile and do things that no one notices. Adding a money/energy savings section to evaluations would change this at a low cost, using systems that are already in place. This would engage employees positively at the grassroots level. Agencies could highlight and publicize the most creative or effective actions to motivate replication and imitation.