I've gotten good use out of SmallRig's NATO wooden side handle for the T5, although I wish it were made of black metal, not so fat, and had the Arri screw-pin connection instead of NATO so as not to clog up the port well.
Several different 8.5 inch usb-c cables are available.
I prefer short braided cables to avoid tangle.
Perhaps the best is Kondor Blue:
https://www.amazon.com/dp/B07YFMTJBK?psc=1&ref=ppx_yo2_dt_b_product_details