My first mod to my car is a phone holder. Didn't like any I found online so fabricated my own. Made from sheet aluminum. Covered the inside with black felt and the outside with carbon fiber wrap.
Here it is in the car without the phone, and removed from the car. I epoxied it into the storage cup.
Nice job. I ended up getting a couple of those "seat gap fillers" from Amazon. Mine are black vinyl with red leather stitching, ordered a left and a right. They come with a cup holder that's worthless unless you drink small diameter water bottles from China, and a couple of longer slots to store other items. Works good for the phone, sunglasses, etc. My iPhone fits stand upright in the cupholder. There's also a hole in its base so you can run a charger cable up through it for your phone and have the other end going into the center console. I tucked the cable between the filler and the console so it's barely visible. They just slip right in between the bucket seat and the center console.
This is awesome! took me a minute to figure it out, thought you kiddingly just propped your phone up. But once I saw what you did in the other pictures i was on board! you should sell 'em