There are already some signals about which government expenses could be on the chopping block for Elon Musk's DOGE.

The Department of Government Efficiency, or DOGE, is reportedly discussing the use of a public blockchain in its cost-cutting efforts.

Musk isn’t introducing a novel idea. For years, people have advocated eliminating the penny, as pennies are rarely spent as change. And since the Covid-19 pandemic, more consumers are shopping online or avoiding physical currency altogether .