Trilancer Elastic Cinch Straps with Anti-Slip Strips, 2" x 18"(4 Pack) Hook and Loop Storage Straps with Buckle, Bundling Bands for Extension Cords, Cables, Ropes, Hoses, Bike, Boat, Pant Garters

It's a 3D printed mount. The originator of the files does sell them on etsy, as well as the 3D files if you want to print them yourself. If you do go that route, get the trilancer straps for it. https://www.amazon.com/dp/B0B18BQSF3?ref_=ppx_hzsearch_conn_dt_b_fed_asin_title_1