Most firetruck lawn decorations include heavy-duty stakes (often two per shape). Insert the stake(s) into the base of each yard ornament and press firmly into the ground until the piece is secure for display.
Assembly varies by item: some decorations require no assembly, others need simple adult assembly with no tools, and kits (like photo props) usually need basic DIY steps such as attaching sticks or components with provided stickers or fasteners.
Common materials include iron for handcrafted collectible models, paper and heavy cardstock for printed cut-outs and props, and corrugated plastic for outdoor yard signs and yard shapes.