What is best in life? To organise your tools. See them laid out before you. And see the job well completed. Array your tools and parts on your tool trolley. Keep them all in easy reach.
Half a job is getting all the tools to the right place. Not walking back and forth because you didn’t grab the right size spanner. Roll your new tool cart to right where you need it.
Hang screwdrivers and other tools off the hanging board. Place your toolbox on top for easy access to everything else. Put all your spare parts and working materials in the lower two tiers.
Press the brakes down and lock your trolley where you want it. Perfect if you are working on a sloping surface. Even better if you don’t want it to knock into your expensive vintage car.
You can even use your rolling tool cart to move things around your shop. Just load them on and off you go. Use it as a temporary work bench or if you are bored, decorate it with tinsel and pretend it is a Christmas tree.