The tried and true, easiest to use, non-leaking water bottle to keep in your backpack. Bonus because it actually fits in the pocket of your bag, and won’t take damage when it inevitably falls on the ground.
Gx Water Bottles & Jugs | Gatorade Official Site
You’re not gonna want to lug around an entire backpack all day, so you need to have a fanny pack for all of the essentials. Pens, pencils, stickers, medication, and whatever little trinkets your campers give you
DSG All Sport Waist Pack
One thing about kids is that they LOVE a good reward. You can easily use stickers as motivation to participate, help out, or clean up. This is a cheap option with a variety of different stickers!
1000 Reward Stickers for Teachers, 16 Designs
literally the greatest backpack, fits everything you could possibly need and has so many pockets to separate things out
