Well, I guess it would depend on whether or not you're asking about a career or a job. A job is something that is easy to leave. A career is a lifestyle. I know you asked about ideas specifically, but I'm going to give you my insight.
Being a Mom - I understand the question. I have it worked out that I work three days in the office and two days part-time from home. I've had to take a demotion and bypassed two promotions to keep this schedule. Some days it's really hard on my ego, other days it's really good for my soul. Both days are REALLY hard to juggle getting everything done and I’ve cried about it more than once.
I also had to work at the same place for four years, proving myself to be a hard worker that will get the job done to the best of my ability no matter what. Not everyone at my organization has the same options that I do. I've been there for 9 years now. I'm also a crazy planner that had this all worked out in my head when I got married. I didn't go into my boss' office saying what I wanted. I went in with a well thought out written proposal about how I would be a better employee.
Being a project manager (and a boss on occasion), I can say that you're asking for a privilege that I wouldn’t be inclined to give a new employee. Not even if you were a nanny or a house keeper. I don’t know you and I don’t know if you are able to juggle getting your job done with the added distraction of having your baby with you. Why would I when there are so many other people out there that need a job and aren’t asking for this privilege?
Why am I being a b@$ch? I’m not. I’m just letting you know what an interviewer will be thinking. So get your answers down ahead of time. There is nothing worse than an interviewee telling me what THEY want from me, when they haven't proven that they can give me what I want.
Debbie Downer aside – the only thing I can think of would be to become an accredited childcare provider and take a position somewhere like YMCA’s Y Childcare program. That way your baby can be on the premises, but you’re in another classroom doing your job.
Or here is an awesome link I found with ideas on corporations that have on-site childcare: http://answers.yahoo.com/question/index?qid=2010062523234...
Another idea is to work somewhere like Club Sport in Tigard/Tualatin/LO area. It has a well run kids program that most of the employees put their kids in when they are working – from sales exec to trainer to locker room attendant. All of them. Link: http://www.clubsports.com/oregon/home.do
Good luck. The plight of the working mom isn’t always easy. I wouldn’t have it any other way though.