We have been through this before. And before that. And before that. Yet still, I keep reading proposals where the PIsclear said "OMG! BI section!" and either vomited up everything that sounds remotely like outreach that they can think of, or wrote down everything they already do that seems like training.
Click on the links above for what a BI section IS, but it is certainly NOT something that should be feared. It is also not:
-Entering information on your organisms/system into some database like Tree of Life. Whereas that is a good thing to do, it does not constitute meaningful BI.
-Creating your own website to host your data and "distribute" software. You might as well yell your results down the hall. You will probably affect the same number of people. Again, software should be accessible, but this is not a BI of note.
-Training grad students. You already get paid to do this.
-Doing all these things in some mixed BI turd sandwich. Just because you write a whole paragraph doesn't mean you have thought about potential BI in your project.
Broader Impacts do not have to be complicated, but you need to show that you've given some thought about engaging people you wouldn't otherwise. This is really not that hard if you find out what your institution is already doing on this front. If you are at a museum or have one associated with your institution, you are surrounded by BI opportunities. If you are in a city, the same. If your institution has ANY program to engage high school or minority students (or both) in science, your work is 80% done. If you have field sites in location where science engagement would be seen as a Good Thing, develop that.
Opportunities to develop interesting and useful BI plans abound, which makes it frustrating when PIs can't even bother to see what is happening at their own institution. While the Web is a useful tool, most websites don't get much traffic, and when they do, it is from people search for that specific thing. In this case, your page about your sub-sub-sub-field is going to be looked at by people you probably already know by first name. Engage them at the bar.