Hook'em Up: For children able to ride on their own but not quite strong enough to cover the entire distance (typically between ages 5 and 8) the Trail Gator is an attachment that allows you to hook a small bicycle to yours when a child is too tired.
Bike Trailers: Bicycle trailers can do double duty carrying both children and camping gear. Most are covered and also provide shade, rain protection, and allow kids to sleep during the ride.
Cargo Bikes: Cargo Bikes such as longtails, Long Johns, and even some tricycles can be more stable than pulling a trailer and allow you to carry more than one child per bike.
For even more family bike camping gear picks see our Family Bike Camping Essentials.
Gwendal Castellan is the father of two and the producer of the feature documentary, long road north, detailing his 15,000-mile (24,000 kilometer) journey from patagonia to the arctic by bicycle. @Gwendal_C