For each roll-up, spread a tortilla with 2 tablespoons cream cheese. Layer with spinach leaves; add 2 slices turkey to cover most of spinach. Spread another tablespoon cream cheese over turkey; sprinkle with one to 2 tablespoons cranberries. Roll up tightly; secure with a toothpick. Place tortilla rolls seam-side down on a tray; cover and chill for one to 2 hours. At serving time, trim off ends of rolls; slice 1/2-inch thick. Garnish with grapes, if desired.