A crib mattress bouncing device includes a lever having a pivot structure for releasably engaging a mattress support frame at a first end of the lever. A clamping structure intermediate the ends of the lever structure engages a tensioned wire or like structure in a mattress support. Displacing the second end of the lever in a first direction deflects the attached and surrounding portions of the mattress support and mattress in a first direction. Releasing a force on the second end allows the mattress support to return to its original position. Repeated actuation of the second end of the lever structure produces a gentle bouncing motion of the mattress.
