Here's a mod holder I made for my cars cup holder. Got sick of it rolling around in the passengers seat. Its 304 stainless 2"i.d. tubing with 14 ga. 304 stainless plate I tigged to the bottom. I then used a center drill bit for the indentations on the bottom. I then sanded and blended in the welds for a seamless look and then gave it a bushed finish.


