Sheepishly (baaa!) ganked from julesjones.
Bold the ones you have and use at least once a year, italicize the ones you have and don't use, 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 knives, electric woks, miniature salad spinners, griddle pans, jam 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, and fondue sets languish dustily at the back of the nation's cupboards."
This leaves out other things we have and use, including a full-scale food processor and tortilla maker. The "coffee grinder" is actually an integral part of our coffee machine, and I also have a miniature blender/food chopper which is great for chopping up garlic, onions, ginger, etc.
For outdoors use I have both a standard grill and an electric smoker.
I'm also considering getting a pressure cooker, as there's some things that appear to be best made that way.