These items are political campaign materials. Typically constructed from corrugated plastic or similar weather-resistant substances, they display the names of Donald Trump and J.D. Vance, indicating support for their candidacy. An example would be seeing one planted on a lawn advocating for their election.
Their prevalence serves as a visible indicator of political support within a community, contributing to campaign awareness and potentially influencing voter turnout. Historically, such displays have been a staple of American political campaigning, offering a cost-effective means of garnering public attention and demonstrating grassroots backing.