Cubing's effect on the brain and spatial reasoning is extremely complex, and impossible to prepare solid results for in only two weeks.
If you do 3BLD (or have a friend who is good at it and willing to participate), performing a 3BLD solve, and then demonstrating how to perform it interactively by showing memory techniques would be something very cool, scientific, and impressive for an audience.... but you need to be pretty good with BLD (I'm not consistent enough to perform in front of anyone, haha)
Like:
1. Demonstrate your 3BLD solve.
2. Explain how it seems impossible, but when you break the task down, it's quite simple
3. Explain how you assign each sticker a letter that tells you which order it needs to be solved in, and how you know moves that switch two pieces, explain the concept of a "buffer piece".
4. Do an interactive solve. (Say, "ok, so I know this one is 'D' and this one is 'G', so I need to remember 'D' 'G', I'll remember that with 'DoG') Have the audience "help" you memorize your sequence. Then demonstrate saying ("ok, and what was the next word?")
5. Explain how we can break down extremely complicated tasks in our every day lives and simplify them, and give some motivational stuff.
6. PROFIT!