Some of my suggestions:
Multitester: much better a bench Multitester, I do not understand why those small portable testers are still used to work at home or in the laboratory, they are very uncomfortable. Small, always occupying a space on the work table that is needed for other things, bothering and overturning easily. The ideal is a bench Multitester, located on a shelf, at a height as close as possible to the eyes.
This is my bench tester, a UNI-T UT804, since I changed my portable tester, for this bench tester, the work is infinitely more comfortable.
Soldering station: The Hakko are fine, but they are expensive, you have good quality alternatives and better prices. This is my Baku 878 L2, a double station, with hot air soldering and fine tip soldering iron. I also have a 100W MLINK S4 for welds that need power.
Electronic components: I use almost everything in SMD, which I buy on reels and when I place them manually on PCBs, I store them in these small boxes, there are several colors and sizes, and they can be assembled between them.
For large components, use plastic boxes. Now that I have bought a Pick and Place Neoden4 machine, I will stop using the boxes for SMD and I will only have reels to load into the machine.
Oscilloscope: Hantek is a good brand and quite cheap. I have this 2x 100Mhz oscilloscope that also includes an 8-channel logic analyzer. Very satisfied with the product.
Power Supply: Nowadays I only use these programmable power supply, they are very cheap, reliable and very versatile. I also have a Chinese variable power supply, but I practically no longer use it.
Shelves : it is important to have everything more or less ordered. I bought these aluminum shelves some time ago, they were very cheap, if I had more free space I would buy another set of shelves of these.
Advanced tools for SMD: As well as everything I design and amount is SMD, I bought a microscope, a Reflow Oven and a Neoden4 Pick and Place machine recently. Also I have a ton of stencils to apply solder paste to PCB.