1. A [safe, of course!] stair-climbing machine for babies. Will would be happy all day, every day.
2. A car-simulator, to help Caroline go down for her nap in the afternoon. At home, she gets tired, but never sleepy. In the car, she's out like a light.
3. Some sort of sprayskirt like kayakers wear. It would attach to the high chair, and fit tight around Will's waist, so that the seat of the high chair would not end up full of smooshed bananas and crushed Cheerios. Yes, the food would end up on the floor, but the floor's easier to clean.
What do you think? Are you with me?