I chose a plan that would require minimal effort — but would maximize clearness of outcome, likelihood of success, and good ROI for the effort required.

1 ) Who gets the package?

Someone who is making a decision that will have consequences beyond zis imagining. Zie was not famous (yet); zie opened zis own packages (sfaik), and had no reason to expect anyone to be trying to influence zim about anything important.

For my purpose, zie does not need to be convinced of anything by/in the package; zie may dismiss it as a senseless hoax. All I need is for zim to at some odd moment wonder: “Is there any way my current plan might go seriously wrong?”

Zie does not need anyone’s cooperation to enact a different plan. It’s all been zis own, minor, project all along.

2) How will you entice this person to examine the package,

See above.

[to] take it seriously,

Unnecessary; it’s a basilisk.

and [to] act according to your wishes?

I chose someone whose wishes coincide with mine.

3) How do you store information in the suitcase? What format do you use?

Simple and obvious. For example, newspaper/magazine accounts (giant headlines, front page photos) of the result zis planned action did help cause in our timeline.

4) What information do you send?

The obvious two words. Plus one of the news stories relating how zis action may have helped cause that result.