An immersion, or stick, blender is a must for any cook. At the very least, it’s the easiest way to make a protein shake for breakfast and not have to wrestle with a blender.
My wooden mixing spoon is my most trusty sidekick in the kitchen, aside from my tongs. I think everyone needs a wooden spoon. It will make your life better.
A good pair of stainless steel tongs come in handy for all sorts of things. If I have to get a prosthesis to replace one of my hands, I would want tongs.
Having a variety of sizes is a good options as well. They are useful as serving utensils and the large ones can be unwieldy at a dinner table.