A lot of people have metal items in their kitchens already, and if you're starting from scratch, it can be a great place to begin. You can add a little shine here and there, then move on to other rooms in your home.
If you're not sure where to start, consider adding a metallic vase or candle holder to your island, counter, or kitchen table. This will draw the eye to the area, making it more interesting than an open space. You could also use a metallic tray as an accent piece for flowers or other items on display.
To take things up a notch, consider stenciling the walls or backsplash with geometric shapes or patterns. You can use these as a tie-in to your metallic accents, or you could just leave them as they are. This will give your walls a modern and clean look that's sure to impress guests!
For something more subtle, consider using metallic tins or jars as storage containers. This will give you a lot of flexibility when it comes to storing food and other items. You can use them on the counter or in your cabinets, depending on how much space you have available.
If you want more storage space but don't want something bulky taking up room, consider using a metal spice rack with clear glass shelves instead.