1. Wall color: Your wall color can set the tone for your kitchen. How about applying a muted brown hue on the walls with a texture technique to give an aged appearance.
2. Island: If you have the space, for an inexpensive price, consider a free standing old wooden center island or table. An old wooden farmhouse table would be perfect. Something that is darker in shade; nothing too overpowering in your kitchen. One that will continue to provide ample space to move around in, even something that may have open shelving underneath would be ideal. You can purchase tables in Tuscan furniture stores, or you may even find one at a yard sale or thrift shop. Save a few bucks!
3. Accessories: Look for old Italian ceramics and antique crocks. With these pieces displayed openly in the kitchen, you will accomplish the Old World attitude you want. You can also consider a small art like a painting or Tuscan photo to be displayed in the kitchen. A special addition that I love recommending is a beautiful bouquet of sunflowers. This can work with either freshly cut, or faux.
After the wall color and texture is applied, you will immediately notice a new vibe of Tuscany. Place your dark stained wooden table or island in the center of your cooking area. A nice Tuscan urn to hold your sunflowers on top of your island adds the sunny side of Tuscany. With the antique Tuscan accessories, display them scattered on the counter tops, underneath the island (if available), on open shelving of cabinetry (if available), and for larger urns, place in corners of the space.