I'll bite. But rather than gadgets. I'm gonna focus on superhuman abilities.
If I could fly or levitate
I could help NASA assemble the ISS
If I could turn invisible
I could hide in the women's shower at the gym and then hire my services out as a spy.
If I had xray vision
After getting over seeing every woman naked and no longer needing porn, I could hire my services out inspecting planes and spacecraft for microfractures.
If I could move at superspeed
I could be the world's fastest door to door courier.
If I could teleport instantaneously, anywhere,
I could create a travel agency bringing wealthy people to the remote areas all over the world.
If I could teleport instantaneously, anywhere,
I could introduce people to their own gods back and forth in time.
I could go on and on and on with this...
Also:
LOL at the Magic Dust.
All a baggie of magic dust would run you in Hollywood is about $100 USD.