Terske turns your thru axle into a portable crank, lock ring, or pedal wrench - Bikerumor
Birzman Cassette Removal Tool for Shimano HG Cassettes - bike-components
Amazon.com : BW Bicycles Cassette Lockring Removal Tool with Handle by Includes Center Guide Pin – Compatible with Shimano, Suntour, Sunrace, Sram and Sram XD Cassettes : Sports & Outdoors