Everyone has their personal preferences, and what is perfect for one baby might not be ideal for another. That said, as a starting point, here are some of my favorites.
Formula: If you are going to use formula, unless your doctor recommends something specific for your specific baby, I recommend starting with a generic brand. We used Up and Up (Target brand) regular iron-fortified formula for our babies. It is exactly the same as Enfamil and costs about $10 less per can! When you are buying several cans per month that adds up fast! The consistency is a little different, the smell is a little different, but the nutritional content is exactly the same. So with all the expenses babies can bring, do yourself a favor and save some dough!
Bottles: Again, if your doctor doesn't advise a specific bottle then here are my thoughts. Babies often don't care what kind of bottle you use, but they often have a preference for nipple shape. Get a couple bottles of the narrow variety and a couple of the wide variety and see what your baby likes better. If your baby likes the narrow kind then I recommend the Gerber bottles pictured above. They are really cheap, easy to clean, and in my opinion just as good as the fancy ones with the vents and the special gizmos that redirect air. If your baby has a bad reflux problem it wouldn't hurt to give a fancy bottle a try, but I wouldn't go out and buy a bunch of them until you know that it will help. The gerber ones are cheap enough that if you are away from home and leave one somewhere, you won't be kicking yourself because you're really only out about a buck or two. The playtex bottles with the drop-in inserts are really nice for clean up, but it's hard to tell exactly how much milk your baby has drank from it unless he or she drinks the whole thing. Might be a good option for a baby that routinely drinks the whole bottle of milk.
Wipes: Once again... Up&Up. Nobody from Up&Up is sponsoring this post, they don't know who I am, and I'm not making a dime on this post, I just really like their products! I HATE Huggies brand wipes. When I wipe baby butts with the huggies ones there are often wipe-fibers coming off and giving me more to wipe up, also they can be a pain to get out of the wipes container once they get down a bit. Pampers are ok. I love the Up&Up unscented cloth-like wipes! They are soft, don't fall apart, easy to remove from the container, do a thorough job, and are inexpensive! I was at the dollar store once and saw they had wipes, so I figured I'd give those a shot... they were awful and I ended up throwing them away. They were so strongly scented with this horrid perfume smell that it grossed me out more than the poop I was cleaning up!
Diaper rash cream: Now this is a category that I have tried the heck out of! I am constantly recommending Desitin Maximum Strength to all my daycare baby's parents. I've tried various ointments, boudreaux's butt paste, burt's bees diaper cream, Desitin creamy, and a wide variety of others. What I've learned is that Desitin Maximum Strength is hands down the only thing worth spending your diaper rash treatment money on! The maximum strength desitin is the same as Desitin Original. Every other kind of rash cream takes at least 4 times as much to gob onto their little rear-ends, and far more applications to work. With the maximum strength stuff you just need a little bit to coat the rash, apply it at each diaper change and the rash is usually gone in about a day.
The only negative is that it can sting if the rash is severe. If the rash is severe then skip the desitin until it's healed a little more and then use it. In the mean time try A&D ointment, pictured below. It is a soothing ointment that can be used for not only diaper rashes, but dry-chapped skin in other areas too. It doesn't work very fast to treat a diaper rash, but it can help heal it enough to use the desitin maximum strength. Please do not buy Desitin Creamy... it falls into that category described above that doesn't work... repeat after me... "Creamy is Crap". Desitin Maximum Strength is where it's at!
So there you have it, take it or leave it. :o)