My instant pot. I make rice in it (and got rid of my 10 year old rice cooker because of it), and occasionally I'll make chicken in it, when the chicken is still frozen and we need food. I have a crockpot that does a much better job for crock-potting and I prefer my roasts/short ribs done in the cast iron, in the oven. I'm keeping it, simply for the easy rice cooking (I heat the water in the electric kettle first, and instead of taking 20 minutes to come to pressure and 3 minutes to cook, it comes to pressure and cooks in about 12 minutes), but I'm meh over it overwise.
My mandolin. I wanted one forever, DH got me one, and I've used it twice, he's used it two or three times. It scares me. Just sits in my cupboard now.
Things I got rid of when we moved last year:
The big and little muffin pans (I also have normal size pans, which I use all the time), but I hate the big muffins because it takes forever to cook them, so the outsides get overdone; and the minis are so hard to time. Also the 'cake pop' pan DD#2 bought me; the one that you seal a top and bottom pan together and pour in batter through holes on the top. I lost the silicone clips the 3rd time I used them, and I hated the mess of coating the pops. I don't like 'regular' cake pops, that are cake mushed together with frosting and then formed into balls, because it is just mush, either. The 'gift tags cookie pan' (that you pat dough into the molds and bake; this one looks like gift tags. I've never used it, in 10 years.
Love it: my Echo Dots (I have four in my tiny house, lol). Great for timers, and for talking to the guys without me having to get my lazy behind off the couch. haha Also, love my tabletop convection toaster oven. I use it for everything...from toast to baking cookies to frozen pizza and pork chops. Also, love my Kitchenaid stand mixer, cause, duh.