What are /r/productfails' favorite Products & Services?

From 3.5 billion Reddit comments

That's why I just get headphones with detachable cords to begin with, like my current Audio Technica ATH-M40x After seeing my sister's ATH-M50x headband start to peel and being bald myself, I put a double layer of athletic tape around the band so that can easily be replaced when it starts to go bad from my head oils.

Audio Jack? I just buy 3.5mm rubber plugs when I have a device I plan on carrying with me and using every day. I also use charge port and usb plugs when applicable.

Quick drying contact cleaner is also good to have, make sure it is not the kind that eats away at plastic.

Use caster wheels for office chairs! No more scrathing and sound!

https://www.amazon.com/wheels-replacement-casters-hardwood-duty/dp/B01G643EU6/ref=sr_1_3?keywords=Rubber+Wheel+Casters&qid=1657148630&sr=8-3

Check the size of the support, i think some brands use a slightly different size, but this was the best thing I bought for my chair.