with modern 32/36h rims, broken spokes, IME, don't demand any special attention. the wheel may not be as true as it was, but will be ride-able for hundreds of miles. you may want to open the quick release on the brake, if there is one.

and in thousands of miles of touring, i can't recall anything other than tubes and tires causing problems.

i usually carry a spare tube, tire-patching kit, pump, multi-tool and oil (it's not always readily available in gas-station trash can plastic bottles like it once was). and if i have a cassette on the rear wheel, i'll leave the lock ring loose enough to remove it with one of the hex wrenches on my multitool.