For the first it sounds like you might be looking for a Gremlins clone. There are a few, but Ghoulies (1984) or one of its sequels is a very good possibility.
Munchies (1987) is another that come to mind:http://www.badmovies.org/movies/munchies/
There is also Cellar Dweller (1988), which has a monster from a comic book. There is only one creature.
Evil Toons (1992) has a monster that pops out of a cursed tome: http://www.badmovies.org/capsules/e/eviltoons/
Your baby carriage and monster claw sounds like It's Alive (1974).