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Crochet baby boots are generally very easy to make, but if you are looking for a challenge and for something that can be passed down from generation to generation, here is a infant boot pattern from 1907.
I have not yet tested out this pattern (currently low on yarn), but reading through the pattern it appears fairly straightforward.
Source: The Cook County herald. (Grand Marais, Minn.), 16 Feb. 1907.