I've had this hundy for about a month now and I cannot STAND the cup holders. I don't know how you guys deal with it! 
Anyway, I found a 3D model of some new cupholders online (here), and I can 3D print things for free at my local library so I figured I'd give it a shot. It took something like 26 hours to print. I used black ABS plastic.
The cup holders turned out ok - not great, but they are definitely functional (and much more so than the stock ones). You can see the 3D print lines, so the surfaces aren't smooth, and if you sand them, you expose the "honeycomb" interior. My guess is that this can be adjusted on the 3D printer, but I'm no expert. I printed mine without "supports" and regret that. The supports would have allowed for better horizontal lines.
If you're going for a utilitarian hundy, not a luxury one, and hate your cupholders, this might be a solution for you. Here's some pictures for your reference.
Anyway, I found a 3D model of some new cupholders online (here), and I can 3D print things for free at my local library so I figured I'd give it a shot. It took something like 26 hours to print. I used black ABS plastic.
The cup holders turned out ok - not great, but they are definitely functional (and much more so than the stock ones). You can see the 3D print lines, so the surfaces aren't smooth, and if you sand them, you expose the "honeycomb" interior. My guess is that this can be adjusted on the 3D printer, but I'm no expert. I printed mine without "supports" and regret that. The supports would have allowed for better horizontal lines.
If you're going for a utilitarian hundy, not a luxury one, and hate your cupholders, this might be a solution for you. Here's some pictures for your reference.