Love Birds or Rice-Filled Heating Pads for Children. This is so cute. I would make sure that the seams are very strong to help the mothers not have a trail of rice. Maybe have a rice bag insert for this.
How to Sharpen Your Rotary Cutter Blade: fold a piece of foil a few times; slice away with blunt/dull rotary cutter, pausing a few times to test it out on fabric scraps till it starts slicing your fabric. end up with an almost new rotary cutter!