Tell me what kind of product you wish would have existed

A Chrome extension that changes the behavior of clicking on an email hyperlink. When I click on the domain part of the email address, I want it to take me to that domain's website. When I click on the first part of the email, it performs the regular mailto action.

I want something like a Herman Miller Embody or Aeron but with a working toilet built into the base of the seat that maybe runs to a septic tank on the back rest or something. I waste a lot of time getting up to use the restroom.

Fall in love with the problem, not the solution.

A modular, customisable build server that lets me set up my build system the way I want it without forcing some system on me. And it should have a nice, customisable UI & Dashboard built in.

Predict the stock market ... sports results, especially horse races.

Tool having the ability to measure emotions.

A product which tells me what other people actually want.