I choose to use Fusion 360 to make my change cup. It was a pretty simple because I didn’t want to get too crazy with it so it will work. I made the cap rubber so it would fit in the hole easily and I made sure to take the correct measurements for my cup holder. The cup is 70 millimeters in diameter and 100 millimeters tall, enough room for plenty of change. The slot for change is 30 x 10 millimeters large enough for any coin. I shelled the cylinder with 5mm thickness and made the cap 65mm with filet edges to squeeze in the gap.



