I have a child three years old, the first four months we didn´t use anything, the balinese way, just put a piece of cloth under and I remember it was a very stressfull time, hehehe not washing machine, not pembantu, washing by hand and the garden full of clothes everywhere, not enought trees!!!!!!!! the good thing it was that the next day everything it was dry, not talking about ironing............after that I didn´t want to use the disposible nappys so I tried to put pieces of clothes under the underwear, although I have to say that the cloth dipers here are not the same I used to see in my own country (spain), I tried to use the less possible the disposible nappys but finally after a while I giving up and use them!!!!!!!
I had to go once with my child to the hospital in Singapore and I was surprise about how many things there are there, at the shops at Children Hospital (KK Hospital), hehehe just in case you are doing any stopover!!!
About the car seats, I know some friends who bought it in Glandys, one of the most popular places to buy things for children in Denpasar although like Mimpi said I have not idea about quality and variety. We always have been around on the motorbike with the carriers bags (sorry I don´t remember now the proper spelling), I remember I was so surprise because that time I spent a lot money buying the baby Borg and the Ergo carriers in Spain and here in Denpasar you can find these kind the carriers in so many diferent places and very very cheap, of course the quality is not the same but finally the funtion is the same..........I guess you know these things, I really recomend you these carriers expecially if you like walking around the rice fields or on the beach!!!!!!!!!! so many beautiful places in bali to enjoy with your baby in your arms and close to you!!!!
http://www.yamp.com/kupukupu