When renting table linens for various table sizes, it's important to choose the right size to ensure a polished and elegant look. Here are some general guidelines for table linen sizes for different table types:

1. **6-Foot Rectangular Tables**: 
   - Standard size: 72 inches long and 30 inches wide.
   - Recommended linen size: 90 inches by 132 inches for a full drop to the floor, or 60 inches by 120 inches for a half drop.

2. **8-Foot Rectangular Tables**: 
   - Standard size: 96 inches long and 30 inches wide.
   - Recommended linen size: 90 inches by 156 inches for a full drop to the floor, or 60 inches by 120 inches for a half drop.

3. **60-Inch Round Tables**: 
   - Standard diameter: 60 inches.
   - Recommended linen size: 120-inch round for a full drop to the floor, or 90-inch round for a shorter drop.

4. **Cocktail Tables**: 
   - Standard diameter: 30 inches, with varying heights (typically 42 inches for standing).
   - Recommended linen size: 120-inch round for a full drop to the floor for taller tables, or 90-inch round for shorter tables.

When selecting linens, consider the style and theme of your event. You can choose from a variety of fabrics, colors, and textures to match your decor and create the desired ambiance. Additionally, ensure that the linens are clean, pressed, and free of any stains or damages to maintain a professional appearance.