self-filling dog feeder from a couple of 5-gal. buckets. With a saber saw, cut the bottom off one bucket to create a serving tray, and cut a food dispensing hole in the food storage bucket (as shown).

These considerations make it very portable and perhaps backpackable as well. [Figjam] took a 5 gallon bucket, wrapped the inside with two layers of swamp cooler matting, made a loop of hose above ...