When disassembling various components on a car, we often use a large number of small tools, as well as not large spare parts, bolts and nuts accumulate. Even if you carefully fold all the little things in one place, there is a high probability of losing something.
When disassembling and repairing, it is a good idea to use a magnet, and even better, attach a container to it, for which an unnecessary stainless steel tray is suitable. To save space, the dishes will be more convenient oval, and old speakers can become donors of magnets.
To keep iron objects better, you can install several magnetic rings, but you have to fix them, you can do this with bolts. If the surface of the tray is smooth and comfortable, then on the other hand, any iron debris will be collected, so the magnets can be closed with a makeshift lid.
Using a magnetic plate will be convenient in the inspection pit and on a workbench. Magnetic force will hold even the smallest instrument.