I do lots of charity quilts and for kids I like to do the "quick strippie", but I do it as a "stitch and flip" so the quilting is already done for you. Add a machine binding and you are done in no time. For adults I like to do a strip quilt like the one in the pic below. It quilts up quickly with just a SID.
Children's stitch and flip in flannel
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Adult size simple quilt
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