Regarding ACV with the mother, you can get it at
Walmart, even. Just make sure you pick up the one that says "with the mother" on the front label.
ChickensforLife, there is SO much info on feeders and waterers and so many different styles and ways of making them. All have pros and cons and at some point, it comes down to both your particular setup and preferences. For example, I *personally* don't like nipple waterers because IMHO, the chickens don't seem to drink as much using them as from a trough/bowl type waterer. BUT that's just me and my way of doing things. I also like hanging my feeder/waterer, that's important to me because it keeps things cleaner and lets me raise/lower the feeder/waterer to match the birds as they grow. But I have a coop that allows for hanging feeder/waterers, with strong steel beams in the roof to support this. Other people don't have the same setup or they don't care about this as much.
I also don't like my chickens getting on top of the waterer/feeder. So, I made a sort of pyramid/cone out of a recycled bin I cut using a circular saw. It's just the corner of a recycle bin with a hole cut through the corner. I ran the chain through the hole and then have a bent U shaped staple that holds it at the height I want. I made this idea up myself and it works. No chickens climbing up on my feeder/waterer so no poo gets in! This is an older picture of it from when my chicks were little. My waterer is different now, but you to get the idea of the recycled bin turned into a cone, which is the blue hanging thing over the feeder.
Good luck picking what works best for you! Many great ideas out there...
Guppy