I'm a pro-sumer level tool owner. The tools I own are heavily focused on my profession and hobby interests, less so on serious auto mechanic or home handyman stuff. My daily work involves vehicle modification and customization around the installation of emergency vehicle equipment into police and first responder vehicles and off road vehicles. I install lights and sirens, scene lighting, technology products, and fabricated metal storage and mounting solutions. I don't really "fix" vehicles, but do often troubleshoot electrical gremlins and repair interior components. My hobbies are guns, bicycles, RC cars, and various outdoor activities.
As far as tools, I have had everything from junk to top brands and I choose tools based on what works the best for the need. I like German tool brands, Japanese tools, US-made tools, and specialized tools for the work I do. I have reached a point in my life, career, and financial health where I have re-built my tool collection, replacing lesser tools with better ones. I finally have about everything I need and struggle to find tools I need/want to buy now. Once I finally reached my tool nirvana, I focused on organizing my tool storage in three Milwaukee toolboxes
For organizing, I have used a variety of solutions, with Toolbox Widget$ being the main "system" followed by Ernst products and some odds and ends.
Sockets - Toolbox Widgets handle most of the sockets and I have some hex bit holders and a BOXO tray for long items.
Screwdrivers - Toolbox Widgets exclusively, as they made the most of the space.
Pliers - Used 4x metal pliers racks from Amazon. Perfect fit and work well.
Wrenches - Mostly Ernst modular wrench holders (a lot like Toolbox Widgets, but better for wrenches, IMO) and a wrench tray from somewhere to handle my Wright Tools wrench sets.
Ratchets and Extensions - More TBW with set trays for some of the extensions.
Pick/Pry/Trim Tools - My most used items, organized with Ernst trays, TBWs, and set trays.
Hammers and Bicycle Tools
Misc Items and Vice Grips
Punches and Files
Large Wrenches - TBWs to hold most.
Wire Crimping Tools - Just laid out in drawer. These get used a lot.
Wire Strippers - Used daily
Odds and Ends (To be Organized, lol)
Yes, the tools are clean. I keep them that way using Ballistol-soaked wipes and Tub O' Towels HD Cleaning Wipes. Takes a minute or so when putting tools away to keep clean. Most of my work is "clean hands" so not a big task in any case. Keeping tools organized avoids the expense of lost tools and the risk of leaving a stubby thing in a car that carries dangerous folks to jail.