"invaluable inputs" is correct and usable in written English.
You can use it when you want to refer to feedback or suggestions that have been especially helpful. For example, "My colleagues provided some invaluable inputs to my project."
Bethelehem Shoals: The dirty little secret of FreeDarko is that, in addition to drawing stuff, Jacob also does a ton of research, and provides invaluable input on the text portions.
Here's an initial survey, spurred in part by invaluable input from Veronique Choa Pittman of the Green Schools Alliance and from my visit last week to the engaging new Green Schools exhibition at the National Building Museum in Washington.
It is not only the discrimination perpetrated in the name of religion that is tragic here, but also the fact that by disempowering women religious institutions, and the broader societies in which they operate, lose the invaluable input of 51 percent of their constituents.
Focus group discussions at the onset of this study provided invaluable input on study procedures such as how to ensure the devices were acceptable to participants and minimize curiosity in other community members.
The method and representation of data proved successful for strategic traffic planning work at City of Stockholm and has since provided invaluable input for and the development of a new cycle plan for Greater Stockholm.
Many thanks to Police Officer Greg Tansey, my remarkable nephew, for his hours of invaluable input.
With the invaluable input of Bernac he showed great skill in writing for the human voice, fitting the music to the tessitura of each character.
In two weeks' time Weirdcore put together the interface using Max/MSP/Jitter and Max for the live audio, with invaluable input from Andrew Benson who recommended the best way to achieve what he needed.
