This is the wrap we made with five yards of cotton jersey, on sale for $3 a yard. Do not take my example for how to wear it, though. This was the first time I tried it with both, and I clearly forgot to check positions in the mirror.
Go here for all kinds of ideas on inexpensive baby carriers. Or follow the directions at Moby Wrap with your own wrap. It works even better for one baby. With one baby you can still do housework. With two you can at least navigate stairs and doors safely.
The key thing about the cotton jersey is you don't have to hem it. It doesn't ravel. Even in the wash. Just cut it and wear it.
D3 is embarrassed by the silly pink hat. D4 looks like a little elf in his.
With the extra fabric, we cut five swaddling blankets. Stretch, it turns out, is the key to swaddling. That and leverage--you have to pin the TOPS of the arms, not the wrists. That and age. The nurses at the hospital only have to wrap sleepy brand-new babies, not determined, flailing 3-week-olds. However, if you catch them half asleep, it can help them stay settled.