Electric knife sharpener.
Maybe more of a splurge purchase and it works so much better than those janky acoustic sharpeners.
What? It in no way works better. It's faster, and takes less attention, but the edges they give are crap, and don't last well.
Even the workshop belt systems aren't better than stones.
Hell, if you want to factor in damage to the knife, any of the motorised home sharpeners are horrible. Until you get into stuff like a tormek, you're heating the edge as you work, and that means you have to sharpen sooner, which can reduce the life of the knife by years over time.
I'm not saying you can't do what you want with your knives, but there's too much actual data on the various sharpening methods to call any of the available electric sharpeners better by any criteria other than speed.
People who buy electric sharpeners also buy cheap shit knives and store them loosely in a drawer with all the other kitchen stuff so it all balances out in the end.
Acoustic?
Fish spatula
I got this one weird ass meat mallet from a Brian Lagerstrom video and I use that shit for my black bean burrito filling. It works like a dream chopping and mincing anything especially if you are cooking it.
Box cutter for removing can labels. That way, they don't get soggy and awful when you have to rinse the can before recycling. Or rinse before opening, if you store your cans in a semi-outdoor environment like me.
I don't know about unconventional but I use the absolute heck out of my half width spatula, the skinny one.
Also got a silicone fish spatula and that thing rocks. I thought it would be too bendy to work, and I don't have any nonstick pans (cast iron all day every day and one steel pan we call the stick pan, sometimes you want fond) so usually use metal but the edge on this thing is knife sharp and it squeezes under fried eggs like nothing else.
I really want a stovetop milk steamer. Sure would use it every day.
My boiled egg slicer. It seemed really frivolous when I bought it, and I probably only use it five or six times a year at best but man if it doesn't cut down prep time for any salad with boiled egg in it, it also works with avocados!
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