Vacuum tube train (like the bullet train, but way faaaaaaaaaaaaaaasterer)
Sonic bush fire extinguisher (yes, it can actually be done)
AI that passes the Turing test remotely
Live Robot that passes the Turing test in person (Ex Machina style)
Simple tablet or injection that cures cancer without side-effect
Brain transplant to regenerated body
Elixer of life (apparently discovered in Kazakhstan this week)
Room temperature superconductors
Batteries with 100% efficiency that don't degrade
Honest politicians
NBN that is better than your existing plan (okay, I'm getting silly now)
You do realise I now legally own part of your program if you use any of these ideas.