Countertop rotisserie. Someone I worked with bought one and always bragged about how good it roasted whole chickens. I got one and it seemed to not get the chicken cooked all the way through unless I scorched the outside of the chicken. I bought a brand new glass bowl convection cooker at a yard sale for $20 several years ago and have roasted probably 100 chickens or more in and cooked all the way inside without burning them.
I've never bought a "useless" appliance, if you mean bought and never used.
Why would anyone do that?
Though it is said there must be thousands of fondue sets, fancy bread-makers and the like gathering cobwebs in gloomy cupboards because they were bought merely as fashionable at the time!
@Torsten I've been using chestnut mushrooms simply because they are the type I use most often anyway. Works beautifully, I've five interlinked smoke/heat detectors in my tiny flat and before the air fryer I was unable to cook bacon how I like it without them all going off 🤣 my air fryer really is the best gadget ever.
@AntisocialTroll sounds good. Looks like I am going shopping tomorrow to get mushrooms and bacon haha. Awesome you have something now that can cook things the way you like em without smoke everywhere
Juicer. Used it once and by the time I got the mess cleaned up I never wanted to use it again. Do you know how many oranges it takes to make a glass of OJ? Friggin' crazy!