Game changers in your lifetime that you could not do with out- tools and gizmos

Wood frame construction jobsites have changed a LOT in the past 10 years. I joined up in 1986. Back then, most guys had their own circular saw, most were "Skil" brand. Hardly anyone had anything else except hand tools.
By the late 90s, guys up here started buying air compressors and nail guns. A few had electric Sawzalls.
From 2010 or so, the switch to cordless stuff has been impossible to ignore. Circular saws, drills, impact drills, planers, roto hammer drills, Multi-tools, even some nail guns.
Mechanics.....you hardly see them using air ratchets anymore.
My latest purchase.......gasless framing gun...

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Paslode gets to be a PITA with having to get it serviced, and the amount I use, the gas usually is out of date before I need to use it again. This HiKoki (Hitachi rebrand) is awesome and most builders are switching to them over here now. Don't need a huge battery, as this one will last all day long.