G.B.
Reading was always my favorite. We got library books to use at feeding times. Also, preschool board games, videos, telling stories, playing pretend games or teaching games (can you find something that's blue? can you find something that's a triangle?), making an audio tape for a relative or just for fun, and getting in those cuddles.
When the baby's asleep, try to do something special with the older one even it it's something that needs to be done like making a meal or dishes or dusting.