I have a new to me FC RX7 convertible in need of a cup holder or 2. After searching this forum & others for ideas, I didn't find any I liked. But then found these on Amazon: They fit well in the door pockets using a small sheet of 1/2" to 3/4" foam behind them to keep them tight. The only disadvantage is they only hold a soda can sized drink, not a large size. Best of all - no modifications or holes

to drill.