Hand for baby sleep: the Zaky infant pillow
These hand shaped pillows are an amazing resource for someone with a premature baby or baby with special needs. These pillows are shaped like a hand and they are weighted. They are intended to be place on or around your baby and are supposed to simulate what real hands would feel like on a baby. They can be very calming to a premature baby with an immature nervous system.
I only recommending using these pillows with medical supervision. Anything in your infants crib can increase their risk of SIDS, smothering or suffocation.
I have a special needs niece and the only way she would sleep was on my chest with my hands upon her back.