and if you want heavy duty water bottles and food hoppers....

3" PVC drainage pipe and ends


for a water bottle...use a sipper valve with threaded end

pipe with end...drill end to accept the sipper valve

asf's...I would put the bottle right through the lid so i didn't have to go into the cage to fill it

for a food hopper: 3" pipe, 1/2" wire mesh and a big hose clamp..once again, I would run it down through the lid so i can fill it outside the cage

just cut a hole through the mesh top of the lid and use a single bolt through the pvc pipe so it dangles/swings.