How about a portable MRI for starters? You could possibly use it a brain computer interface. You could also perhaps use transcranial magnetic stimulation to send data into your brain? (Just some wild thoughts).
On the more mundane side, you could use the diamagnetic effect of high magnetic fields to deflect water from windshields, keep snow off your driveway, give your tires traction on ice. You could even hover over water.
I'm sure there are lots of other applications I'm overlooking.
I think the downvotes are for the unsupported assertion that in 20-30 years we'll have magnets this strong in everyday devices. This seems unlikely, for various reasons.
On the more mundane side, you could use the diamagnetic effect of high magnetic fields to deflect water from windshields, keep snow off your driveway, give your tires traction on ice. You could even hover over water.
I'm sure there are lots of other applications I'm overlooking.