Do you need to buy all this stuff to hike the Grand Canyon rim to rim?

I bought a bunch of new things for my hike across the Grand Canyon. We planned to hike across in one day (rim to rim) and I had lots of worries. I bought a few things to make it easier but I wasn't sure if it was worth it. Here are 4 pieces of outdoor equipment and clothing I bought just for the hike and whether I needed them. PS - I have an 8 minute video of the hike with lots of "live" updates recorded along the way, and I'm making a video now with my COMPLETE packing list.