Where are you brooding, in a climate-controlled house or outside subject to temperature swings. If outside, what are those temperature swings? (That's basically where are you located and what time of the year will you be brooding them?) How many chicks? How big will the brooder be? Do you know what it will look like? I'd suggest different brooder heaters depending in this type of info.
I don't have a "best" for everyone for these. We use different things. You can buy, make, or repurpose things. For chicks, those long red plastic feeders with 16 holes for them to eat out of are pretty popular. Some people like the hanging feeders that look like bird feeders. I've made a trench out of wood. For the first few days when they are learning what to eat something like the paper plates Rosemary mentioned are not bad.
For older chickens you have a huge choice. Some people use hanging feeders that look like bird feeders. Some make feeders out of PVC using 90 degree bends, there are examples on this forum. Some use trenches or bowls of some type. I cut 2-1/2" holes in the sides of a 3 gallon plastic bucket and hang that.
Waterers also vary. You can get those that chick waterers look like a bird feeder, similar to some feeders. Make sure those stay level or they will leak. Some people use nipples, either horizontal or vertical. I use a black rubber dog bowl with rocks so they don't drown by walking in it. If they can, they will poop in it so you need to change it out regularly.
Waterer options for adults are similar to these.
I don't use an automatic door so no comments on those.