Was in a local auto parts store a number of weeks back- I think it was an O'Reilly Auto Parts. Bought a couple of the "in the window slot" type cheap cup holders. These have kind of a vertically "sliding" top with a long triangular piece that is supposed to go into the door along side the window. Naturally, they won't fit into the tight Crossfire window slot in the doors (although with the window down - then will go OVER the window and slide in on the outside). But the reason I bring this up is that these cupholders will hang on the glovebox. Open the glovebox a little, put the triangular tab in the opening and close the glovebox. Works great. I bought the black ones and using double sided tape, attached these pale gray "moisture absorbing stones" that my wife had previously given to me for my Jeep cupholders. The black and gray color combo almost makes it look like it belongs in the car. Not elegant, but it works and doesn't look any more like a sore thumb than it needs to be. As long as your seats are not pushed all the way back to the rear wall (roadster), you can even take the cupholder off and toss it out of sight behind the passenger seat when not needed.

Guy