I've been contemplating this thread for a while, winter seems like a good time to start it.  I hope you will all pitch in.  I did this exercise at home and came up with at least 56 rules of my own.  Here are some of the top ones:
1- Use your personal flotation device.
2- Always tie your canoe to shore and to a tree when in camp.
3- Bring a compass and know how to use it.
4- Bring several kinds of incendiary devices, so to always be able to start a fire.
5- Bring along lots of rope.
6- Double and triple bag your food stuffs.
7- Always hang your food pack.
8- Collect fire wood before dark.
9- Leave your route plan and day of return with your loved ones at home.
10- Know how to identify poison ivy plants.
11- Have a dependable, water proof, rain fly packed.
12- Pack for all kinds of weather (hot, cold, wet, windy).
13- Make camp before supper time(4:30-5:00 pm).
14- Keep a clean camp, no food out or strewn on ground.
15- Know basic first aid and take along a basic first aid kit.
16- Pack good sun screen and bug repellant.
17- Pack two flashlights, in case one is lost or quits.
18- Drink plenty of water and stay hydrated.
19- Do not get too close to moose.
20- Make small fires, not bon-fires.
21- Do not pitch your tent under dead trees.
22- Do not pitch your tent down wind from the fire.
23- Take good maps and know where you are at all times.
24- Have a pack of absolutely water proof matches with you.

I KNOW we can come up with at least 99 together.... 8-)