First off, I replaced the cupholder with the storage bin. Without any doubt, I get much more use out of the bin.

Then, I created a new cupholder. I took a store-bought cupholder that had a rubbery strap that could be wedged into any available part that could be closed on it. Initially, I would clamp in into the glove box, but I didn't like it rubbing on, and possible marring the face of the glove box.

So I then took an old credit card or gift card, blackened it, and secured it to the bulkhead using high-strength, high-temperature double-sided foam tape with about 3/8" of it sticking up over the top of the bulkhead. I took off the rubbery strap from the cupholder I bought and now hang it from the exposed edge of the credit card.

Here's pics. (also note the placement of my "Powered By Mercedes Benz" nameplate)