Swapping out grease is important once mixers get old, the original grease is clay-based and it eventually separates. Oil drips out of the machine and the gear case is left with big masses of clay.

It's also not a very good idea to never change your transmission fluid

At other folks have said, LaCrosse would be a good one

I think you'd be good with a clock from pretty much any real company (eg not a generic Amazon seller). Sharp, RCA, and Westclox all have some offerings on Amazon that would work well. Despite how it may seem, even cheap modern electronics can last a really long time when they're as straightforward and bare bones as a clock. There's just not much to go wrong with them and we've been making them with few changes for decades.

KitchenAid mixers are still great, their other stuff isn't very different from any other small appliance

Essential Craftsman recommends a Spencer logging tape. They're serviceable with parts available online, made of metal, and you can let them hang from a belt loop while you use them instead of having to unclip and reclip like a normal tape

Reading the low reviews is also good because it lets you know if it's a problem with the product or a problem with the user

They're good to have around when working with hot glue, any glue that drips onto it peels right off

No, Sawyer or lifestraw filters are a different thing, a lot of them will connect to a hose or water bottle

If you don't mind buying used then Bose Wave radios show up on FB marketplace regularly. I have a Wave Radio I from the late 90s that sounds great and feels well built, I can't speak for the later models but they seem alright