Wow, you guys are good once again! lol
Make sure all the hoses are in good shape....you still see those poor buggers steaming at the roadside in Mid_SUMMER MADNESS....and the spare tyre is inflated (hopefully a full sized one) also join CAA fer the maps,TRIPTIKS and motel and gas rebates and to help at the roadside should the fickle finger of fate point your way...Bon Voyage...share some pics and don't bring any of those GIANT MOSKIES in yer car as ya drive thru my way......................
...Ooops just saw yer other thread...YOU ARE SELLING THE CAR ..!!!!!
in that case a nice pair of WALKING SHOES and a camel back water pak is in order..happy trails...

Ok, my Mom (who is going with me, and my Dad, but he's in a different vehicle) is a member of CAA, so that's all good. I'll try to get some pics online.....not sure when, but I'll try!!
Haha, I'm not going to sell it until
after I get out there!
If you keep your car in good shape there is really not much to do.
See if your dealer has a summer special on checking the car over
I just go to an independant mechanic....
new wiper blades to clear the bugs? A/c ok?
I'll probably get new wipers....these ones I have are rather crappy. But I have no money....so it will be later in the summer.
So far, so good for the A/C.
On a trip that long I would make sure that my next oil change interval will not come up before my trip is completed. If so change the oil a few days before you leave so that you can make sure there are no leaks from the filter etc.
Coolant: I carry a 1L (or a 4L in the truck) concentrated coolant as well. With so many different coolant chemistries it is hard to know what is what.
Belts: Make sure they look ok and aren't worn. When I replace my belt I zip-tie the old one somewhere in the engine compartment as a backup. To replace modern serpentine belts only a large crescent wrench is required.
Tires: Don't forget the spare tire pressure. Confirm that you have a jack and lugnut wrench that fits the lugs on your car. I carry a can of Fix-A-flat. If I get a flat I try to fix it with the goop first. Much easier than trying to replace with the spare on the side of highway in the middle of the night etc.
Key: Wire or use a magnetic carrier to place a key somewhere under your car. Nothing like losing your key (locking in car) in the middle of nowwhere.
Ok, I'm getting the oil changed tomorrow, so by the time I want to leave, it should be due for another one. So I'll get it done before I leave, then should I get it done again after I get to my destination??
I'm only allowed to use the DEX-COOL coolant, as per the book.
Tires I'm good for. Just got 2 new ones, and there is a spare in the trunk (even if it is a dummy tire, but it would work! And has worked!) and all the jack stuff for it (it all fits in there so neatly!

)
I always carry 2 sets of keys with me since I locked myself out of my mom's car a few years back. And locked myself out of my house(s) a few too many times to count. Now I make sure that I always have a set of keys in my hand as I'm going out the door, and one in my purse.
Boy, if I were you taking all that stuff up north, I'd have no room for anything else! lol Guess it's a good practice to get into, being prepared and all though. And I agree that once you get up north, your places are few and far between eh?
A first aid kit is always good to have, as well as some road flares and a flashlight.
First aid kit....good idea! Oh...mental note: get a flashlight lol
A roll of Black electrical tape is a good thing to carry for that hose that could split in the middle of nowhere as well. On the TransCanada highway if that is the route you are taking I would remember this one rule. When you hit half fuel tank Stop and fuel up as it can be many miles before you see the next station especially at night. Also carry a old rag for checking your own oil so that you don't get short sticked at some remote service station as well. Bug repellent may be handy as well as a good pair of work gloves and a 1st aid kit. 
Electrical tape I wouldn't have thought of. I would have figured Duct Tape lol.....but that's just b/c my family is a huge fan of the stuff. Anything needs fixed, use duct tape.
Totally agree with you on filling up at half way. I generally do fill up at half a tank, regardless of when or where I am b/c the bottom half always goes so much faster than the top half.
Bug spray would be a good thing! I swear, I look like I have the chicken pox, and I'm about as itchy the chicken pox too! (I don't...it's just all the mosquito bites!)
Is it a good idea to check the oil when it's hot??? I was always told to check it when it's cold.
We aren't actually going through Trans-Canada all the way. We are going south to Fargo, ND (my brother and sister-in-law are there), over to Indiana, up to Toronto, and then once we hit the Trans-Canada, we'll stay on it. You all are probably thinking "she's crazy to go that way" and I tend to agree, but my dad is picking up a trailer/camper from Indiana, and taking it someplace out that way (not sure where it's going to yet).
Check and make sure your spare tire isn't flat...
Oohhh....flat spare tire....would not make me a happy camper! lol That would be terrible!!