The only food/drinks I carry in my Model 3 with me are standard 16.9 or 20 ounce bottles of water, and I keep them in the center console cup holders. However, the bottles are too small to be held snugly in these cupholders and end up flopping around. Sometimes falling mostly over, one time falling out. So I had an idea but no way to make it happen on my own. Hopefully someone here is interested in developing it and selling it. I'm imagining a donut of black (or any color) soft silicone whose outside circumference fits the car's cupholders nicely and whose inside circumference will allow a standard size water bottle to slide inside and be held in place. Not too tight on the inside that the cupholder adaptor would be pulled out when you remove the water bottle to drink. Maybe something like this? But not really. That then goes inside the built-in cup holders. But, ya know, not an actual donut. But the outside and inside circumferences are the right size, made from a nice soft silicone that would insulate naturally a bit. Thoughts?