via ailbhe and everyone else: Bold the ones you have and use at least once a year, italicize the ones you have and don't use, underline the ones you use at least once a month, strike through the ones you have had but got rid of.
I wonder how many pasta machines, breadmakers, juicers, blenders, deep fat fryers, egg boilers, melon ballers, sandwich makers, pastry brushes, cheese boards, cheese knives, crepe makers, electric woks, miniature salad spinners, griddle pans, jam funnels, pie funnels, meat thermometers, filleting knives, egg poachers, cake stands, garlic crushers, martini glasses, tea strainers, bamboo steamers, pizza stones, coffee grinders, milk frothers, piping bags, banana stands, fluted pastry wheels, tagine dishes, conical strainers, rice cookers, steam cookers, pressure cookers, slow cookers, spaetzle makers, cookie presses, gravy strainers, double boilers (bains marie), sukiyaki stoves, ice cream makers, fondue sets, healthy-grills, home smokers, tempura sets, tortilla presses, electric whisks, cherry stoners, sugar thermometers, food processors, stand mixers, mincers, bacon presses, bacon slicers, mouli mills, cake testers, pestle-and-mortars, gratin dishes, apple corers, mango stoners and sets of kebab skewers languish dustily at the back of the nation's cupboards.
The OH and I would have more of these, but we have a rule that we call "Donald." In one of Donald Norman's books (I think it is Turn Signals Are the Facial Expressions of Automobiles) he talks about how since he's a usability expert, companies send him gadgets to evaluate. His family established a rule about which gadgets he could accept. He had to be able to answer several questions about it. I'm not sure what his questions were, but our questions have evolved into:
How are you going to use it?
Where are you going to store it?
How are you going to clean it?
Where are you going to plug it in?
So the challenge to "Let's buy this gadget!" is "Doooooooooooonaaaaaaaaaaald!" And if the person who wants the gadget can't answer all four questions, they can't buy the gadget.
What languishes at the back of our cupboards are various coffee-making implements ('cos I keep trying different ones), fancy serving platters that we received as wedding gifts, nice glasses (we use plastic beverage holders for everyday because we're klutzes), and large casseroles. The bread-making supplies would languish, but they have been repurposed for other uses.