Things to do on two 12-hour car rides?

I have an iPhone with lots of games (although suggestions for that are good), it'll probably last me about 5 hours (maybe). I may or may not be able to fully charge it in between the two rides. I will have a bunch of my friends in the car with me, and we will stop multiple times (if that makes a difference). We have lots of books and magazines I can bring, and I can read for about a half-hour at a time without getting sick. My friends will probably bring food, water, and iPhones, iPods, etc. I will not be able to buy anything, (besides iPhone apps) between then and now. Also, I'm bad at sleeping in cars, and this will be in the middle of the day, so I most likely will not be able to sleep.
I'm planning on bringing:
iPhone (with multiple pairs of earphones, earphone splitter, speakers, usb cord, car adapter, etc.)
A book and maybe a few magazines
A couple notebooks and lots of writing tools (pens, pencils, etc)
LOTS of water and food
What should I do to entertain myself with my friends? ANY ideas will be GREATLY appreciated!

I NEED to upgrade to iOS5 and I need instructions?

So basically I bought my iPhone at the end of 2010 or the beginning of 2011 and I haven't updated it since. I have been wanting to, but I'm worried I'll mess it up somehow and just lose everything. I called Apple about 6 months ago and asked them how to do it and they sent me a few links. One about backing up, one about transferring purchases to a computer and one about updating. So do I need to do all 3 of those things? And there was also one about uploading your pictures from the camera to a PC. But wouldn't the backup just cover that for me?

So basically, I've been putting it off for ages, and now I'm finding that I can't download some apps because my software is too old (I mean really old, I haven't updated at all).So can someone please just give me simple instructions that I can follow in order to update without losing anything. All the links confuse me.

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I have an iPhone 4S, I have Unlimited Data still from my previous plan. I would like to know how much it would be to turn on Mobile Hotspot, and would it share my Unlimited Data Plan?

How much is it per month? Is there different pricing if I were just connecting my other Apple Devices to it, nothing else?

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Well i have a tmobile sparq and an iphone 3gs and only can use my tmobile phone. Is there any way i can put my tmobile sim card into my iphone? And also i do not know how to unlock any one of my phones

How to shrink a loose silicone material phone case?

Ok so i have an iphone 4 and my first silicone phone case became loose within a month and i ordered a second one but after a while the same thing happened. Rather than buying a third one i've heard there are ways of shrinking silicone phone cases but i'm not sure how if that is true. If you have any suggestions or tips please let me know.

What is the best printer to get, compatible with Macbook pro, iphone 3gs and 4?

I'm looking for something around or under 200$, and what's most important is that it maintains its connection.right now i have a wireless HP that CONSTANTLY loses its connection, especially when i'm in a rush. Ideally I'd like it to to be fast, don't really care about faxing but scanning is a benefit. I'd be printing a lot of black and white so I don't want to have to change the cartridges every week.

Its likely i'm being too idealistic for my price range, but I don't really know that much about printers so i'm throwing it out to you guys.

Can you watch netflix on two different TV s in different homes?

We can watch Netflix on our Wii, computer, and iPod/iPhone. But I was wondering if you can watch them on 2 different TV's in different houses. So can we be signed into the Wii at my house, and signed into the Bluray player at my grandparents house so we can watch it there too, for no extra charge (The same account)?

Is my iPhone causing my vision to get bad?

I use my iPhone. A LOT. The past week I noticed I'm having trouble reading things far away… I usually always have perfect vision. I mean I can read it but I have to focus. Is there anyway to stop my eyes from getting weak and having to wear glasses? Should I not use my iPhone for a few days? Help! Well also… I use my phone in the dark at times. And finally… I started noticing this about the same time I started fasting from sunrise to sunset… I don't eat or drink anything from sunrise to sunset… Including water. It's for religious purposes. Anyways, could it be because I'm not getting proper nutrition? I also have a headache all day when I'm not eating. But the headache goes away after I eat at night. So is it the fasting that's doing it or am I getting bad eyesight?