I love making dim sum and dumplings at home so I have stocked up on traditional Chinese bamboo steamers of various sizes: large, medium, and small. My favorite would be the 6-inch bamboo steamers that nestle comfortably in my wok, plus the smaller steamer that always reminds me of my enjoyable dim sum experiences at a Chinese restaurant.
The size of the bamboo steamer is a personal preference, but do make sure that you get the ones that would fit perfectly in your wok or stir-fry pan (your cooking pan should be approximately 2–3 inches wider than the bamboo steamers). If you buy smaller bamboo steamers, buy at least two baskets so you can stack them up and steam more food. If you get a bigger size, say a 12-inch bamboo steamer, one basket should be sufficient.