Damn man, I got frustrated by just reading your inconveniences with retro Mercury. :[
Personally I have saved everything on a small USB stick.
Then I have also printed loooots of things. This is the initial reason why I had bought my scanner/printer. It had costed only 38 euros and it does wondrous job! I am very satisfied.
As for the squares, I have written them in a notebook. Fuck technology man, you can never rely on it. Say, if you have a power cut; what are you going to do?
I have candles for this purpose.
And also, this is why I bought a mobile phone with touch screen (the one I have with my number one doesn't have touch screen, it has buttons; not so easy for the enemy to watch me). With the touch screen phone I have a few pdfs and programs for the planetary hours and void moon. I have also printed the schedule that our Brothers and Sisters had created that it said when are good dates to do certain magick, the sabbats etc.
Whenever I know that Mercury will go retro, I ask myself, am I ready?
Is there something at my computer that if my computer breaks down, I won't be able to recover?
If yes, then I'll write it on a USB or buy CDs/DVDs, or print it out.
If my phone breaks down, will I be okay?
You know, questions like that.
So, if I were you, I would avoid bringing coffee or other drinks (or liquid foods) near the laptop/phone etc during the retro Mercury.
Just be prepared man, and the retro will not touch you.
So, when I am fine while in retro Mercury, I hear from everyone how their fridge broke down, their car broke down, their tv and so forth.. And I'm just like lol. Thank Satan for this knowledge.
If you prepare beforehand, even if something goes wrong, you will still have a backup; an alternative solution to help you out.