the people have spoken. also included in that list are whisks, cheese graters, champagne glasses, and apple corers. fuck these kitchen utensils!!! 

Former housekeeper here:

A lot of people in the notes giving the very good advice of getting yourself a bottle brush to deal with several of these pain-in-the-ass dishes, and also to promptly run soapy water through your blender or food processor after use. I will also note: if you don’t manage to clean all these things promptly – leave your dishes with the annoying nooks and crannies to soak in hot, soapy water. After a couple of hours, take em out, rinse em, change out the soapy water, put em back. Changing the water for stuck-on gunk is the magic step no old person ever told me about how to make that process work, but two changes of hot, soapy water over the course of 4-24 hours completely unglues most things from, for example, whisks and graters.

Muffin tins with the awful little metal grooved bits inside the muffin cups? Apple corers? Buy a toothbrush with firm bristles and make it part of your sink’s dishwashing tools. Use it on these things. For the blades on the two-handed version of apple corers, a toothbrush keeps your fingers out of the blades; for the tube style apple corers, it lets you reach the sticky bullshit a sponge or cloth can’t normally get to.

Also, if you have surface rust on your (not cast-iron, and not teflon-coated) metal stuff and you want it gone before it turns into proper rust damage? Toothpaste and a scouring pad. Add baking soda if you feel like it. No water at first, just scrub a pea-sized amount of that minty bullshit in there for a bit, wipe it off with a cloth or paper towel, repeat.

Also, blender blades? Shortly after you’ve finished with the blender, quickly rinse it out (don’t worry about doing a good job). Then fill it up about halfway with water and add a squirt or two of soap. Now, put it back on the stand, put the lid on, and TURN IT ON FOR A FEW SECONDS. That brief spin in soapy water is going to do more for your blender blades than any time spent soaking or scrubbing.

In most cases, you can then just rinse it out with hot water and you’re done. If there’s any scrubbing left to do, it’s usually minor. This trick has made me willing to make smoothies again.