Given a travel related situation, and given a specific question about the situation, summarize the question into a title

I have travelled with a laptop before with no problems (not recently), but for an upcoming trip I will, for the first time, be carrying a smartphone and a Kindle (not the Fire but the older e-ink type). I've seen complaints on the net that airport scanners have damaged Kindles, and I can't find anything conclusive about smartphones. I want to carry these items, not put them in checked baggage.

What should I do to ensure that all of my gadgets still work when I get through the checkpoint? If any of them should not go through the X-ray machine, how do I accomplish that? (Just ask them to hand-inspect?)

How do I prevent damage to electronic devices at airport security?

I'm currently enrolled at Victoria (by TAP). Even though I collected new miles over the holidays, my old miles will expire.

What other Star Alliance programme would extend the expiry date of all my miles without extra charges?

Note that this is the case with FlyingBlue (by KLM): my miles would expire in February, but with the new miles I collected over the holidays, all my miles have a new expiry date. Thanks.

EDIT: This list shows a number of airlines that allow free resetting of expiry date, although it doesn't split the airlines by alliance.

Star Alliance programme with free expiry date extension

I currently living in Canada and I came back after a short visit (3 days) last night from USA. I came through Windsor and I forgot to hand over my I94 to the Canadian officials.

I am currently on work permit here and I'll be visiting us again during Christmas break ... I wanted to know what will happen if I try to re-enter.
The i94 expires in May 2017 so I'll be re-enter in before it's expiry and I'll be traveling through air through Pearson airport in Toronto.

I looked at a few of the websites/forums and they said it might take a month or two to update even if I mail them back. But, ill be re-entering again by that time so I am.not sure if I should mail them.

What should I do now ?
I forgot to return my i94 yesterday and I am planning to revisit USA in December . What will happen when I try to re-entry