You can get them on Ebay and on Amazon. Both the straight nipple waterers and the little cups with the lever that the chicken taps to let in more water.I love the water bottle idea. My littles are so messy and I am changing the brooder box almost every day because they are spilling their water. Where' the best place to get the nipples for the waterer?
My chicks also caught on quickly to these; I tapped the nipple waterer a few times to give them the idea.