Re: bad eating manners..
We bribed our daughter to eat with her spoon. We would do what she wanted - clap, sing, pat the table, etc. As soon as she used her hands, we'd stop. As soon as she'd use her spoon, we'd start again. She still likes to eat with her hands, but we just keep reminding her to use her spoon. We have also put her in time out (with many reminders and a warning before hand), for pushing her mat away. It sounds stupid, but she knocks things over when she does it.