The Center for Open Science are giving away $1000 to the first 1000 researchers who pre-register their research project with them:

If you have a project that is entering the planning or data collection phase, we'd like you to try out a preregistration. Through our $1 Million Preregistration Challenge, we're giving away $1,000 to 1,000 researchers who preregister their projects before they publish them. It's straightforward to complete and will really enhance your research output.

Find out more here:

What is pre-registration??

You can also find out more in this blog post here: