Slings are the greatest idea since before sliced bread! 
Last night I saw a woman at my ballpark who had TWO babies in slings, one on each hip. They were obviously new adoptions or fosters, because all three people involved were of different races, and the babies were too close in age to be biological siblings. She was attempting to get the one who could walk down to the ground, and looked to me like she was stressed a little. I asked if I could help, but she managed to get her down before I could take the two steps between us. Yay gravity!
I know one thing...I could do one baby on each ample hip, but the squatting required to get one down would have killed my knees! That's why I offered my help. lol!
Karen
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insidious ungovernable cardboard