Give your garden a nostalgic vibe with a DIY windmill made from a vintage bicycle wheel. Look for an old bicycle wheel at flea markets, thrift stores, or online classifieds. Remove the tire and any unnecessary parts, leaving only the metal wheel. Attach wooden or metal blades to the spokes of the wheel, creating a fan-like structure. You can paint the blades in bright colors or leave them in their original state for a vintage look. Secure the windmill to a sturdy post or pole in your garden, and let the wind bring it to life. The spinning motion of the bicycle wheel will add a unique and eye-catching element to your outdoor space, reminiscent of simpler times.