Repurpose a retro serving tray into a unique bird bath that adds a nostalgic touch to your garden. Look for a serving tray with a shallow lip and a smooth surface. Clean it thoroughly and attach it to a sturdy base, such as a wooden post or a metal stand. Place the tray bird bath in a sunny spot in your garden, as birds often prefer bathing in warm water. Fill the tray with water and add some decorative elements like small pebbles or floating leaves. The birds will be drawn to the vibrant colors and enjoy splashing around in this DIY bird bath.