Dealing with new kids can be super frustrating, especially when they show up for the first time at kickoff, expecting to jump right in with 0 knowledge. I think to get things done as effectively as possible, you have to accept that not every single person can contribute directly to the final robot. By giving those new kids tasks, we are investing in them for future years. We just need to hold their interest so they keep coming back.
Here's what we came up with for new kids:
I know you said you program in LabView. We are a java team and I don't know LabView very well, but this may still be applicable.
I set up a simple Java project that runs on the computer and allows you to program a 2D "robot" to move around on the screen. The structure mimics that of the WPILib command-based system, so it's good practice for real FRC.
Originally I wrote the project to help them understand Command based programming, but now when I have inexperienced kids showing up looking for something to do, I just point them to that game.
Here is a link to the github repo for anyone interested (All the inner workings are hidden away in a jar)
The source for the back-side that makes it work is available
here.