Bottle opener, screwdriver, phillips screwdriver and pry bar. Fits on yer keychain. Goes on a plane. Gerber Shard. (and opens boxes a treat)

Typically? If in tech it is so they can justify a H1B visa. "We could not find anyone in the US to fill this vacancy, so we want to hire xxx from (Canada, India, etc)"

I've had to get 'computer glasses' (I am nearsighted)

They are bad at everything but looking at screens at just the right depth.

If you've got no corrective lenses, inexpensive drug store glasses may help. Or ask yer optometrist the next time you see one.