Perfect!I have problems lifting things so have had to look for smaller storage solutions. I made a tiny toolbox for coiling and building - minus wire and cotton - out of a a 2 tier caboodle that's meant to be a travel make-up case. I covered the mirror with a sheet magnet that is just strong enough to hold all those tiny hex keys that come with various tanks without disturbing the items in the top tier when closed. Holds everything I need for cleaning, coiling and rebuilding except wire and cotton and it's just 8" wide.
https://www.amazon.com/gp/product/B07TW6N4WV/ref=ppx_yo_dt_b_asin_title_o04_s00?ie=UTF8&psc=1