I had to purchase this Summer Infant Inclined to Sleep Positioner:
And this Fisher-Price Ocean Wonders Soothe and Glow Seahorse:
...to accomplish the job, but they've worked wonders. The sleep positioner keeps my little wiggle-worm from contorting herself into the many uncomfortable positions she always seemed to end up in when in her crib and its incline helps with her reflux. The seahorse somehow manages to knock her out cold in only 5-10 minutes.