You can also use your throw rope. Small whisk broom. Shorelines tend to be sandy, and it's nice to be able to keep your tent and other gear from becoming too gritty. Compact, short-legged folding chair. After a day of paddling, treat yourself to one with a backrest.
Most outfitters sell take-apart or very compact nylon or canvas chairs.
Even though you may be traveling from camp to camp by boat, you'll probably take some short walks. A pack can be helpful for toting water bottles, too, if the water supply is more than a few yards from camp. One of the things you can bring that really separates canoe camping from other forms of wilderness travel, a cooler is a real luxury. Make sure you bring one with a latching lid in case of a capsize. Another luxury item, great for cooking at a comfortable height and for keeping your food out of the sand.