I took all of those "foldable" cutting boards and transferred them to the craft room. They are terrible for food, I spilled too many veggies off of those things to keep them. They work alright as templates though.
I have a waffle iron that I've used maybe twice that I've been hanging onto for a couple decades. It's a nice iron; it was a wedding present from a friend who is now deceased and it's the only thing I still have from her. Silly to be sentimental about a waffle iron, but I am!
Other than that, we are pretty good in the kitchen about getting rid of non-functional things promptly. I like cooking and baking, especially in the colder part of the year, so I actually use things like my bread maker fairly regularly. I don't use my spring-form pan as often as I should, I think I need to come up with some new desserts to make in it. How's that for motivation? LOL