Crib Mattress: Organic cotton is grown without the use of toxic pesticides or chemical fertilizers.
1.

or
2 the Organic firm mattress for standard baby crib may be another good choice:

Organic Mattress pad that is waterproof what a great idea for leaky diapers: (you may need two)

Organic cotton sheets are produced without harsh chemical bleaches or dyes. They are natural and hypoallergenic: A cute colorful choice made from soft organic cotton rather than the usual white and creams, so pure and gentle for your baby’s pure skin

The Crib:
I would pick that made of wood; they have that made from oak, for sure better than the artificial materials used in making most cribs, check this 4 in 1 crib that is very useful and it can be used for a long time as your baby grows.

As for winter covers: I would go for the Organic Wool safer than the synthetic comforters laced with the fire-retardent:

And remember its safe to keep your baby sleeping on the back for the first 6 months.
Please avoid toys or pillows in the crib at least for the first 6 months as well.

Baby strollers:
The Rolls Royce of all as most parents tell me;

Another good stroller that comes with a car seat

For luck families with twins check this double stroller:

Baby food and safe feeding products:

Born free baby bottles free from toxic plastics:

Baby teething give him fresh food to chew to sooth and nourish

Breast feeding friend firmer and more support for the back than the boppy

The best diapers and the must have for sure is: (and they ship them to your door)(: