Before my children started school I looked at lots of ways to earn extra money form home and I even tried a few.
I taught baby sign language and bought the franchise for my local area. This involved teaching classes one morning a week with my baby on my knee. I would do online surveys and dallied a little with mystery shopping. I used to buy books at car boot sales and list them on amazon to sell. I would take all our used baby items and eBay them.
The baby signing was fairly lurative but the rest was little bit hit and miss.
Looking back I wish I had been a bit more dynamic about finding out what was out there. Blogging can be a way to make a few pennies and I wish I had discovered it earlier! Writing is something I love to do and it is a lot warmer and drier than a car boot sale. Writing and selling ebooks is a great way to make money if you have a PC and selling your wares via the internet gets increasingly easy.
I know a clever lady who restores vintage items, showcases them on her blog and pop link straight through to Etsy where she sells them.
Many people /Most people have access to the Internet and it is a real asset if you are trying to earn money whilst your little one naps or when they are in bed. Needs must and I think generations of stay at home parents have had to do a little something or other workwise to make ends meet.
Takenote Typing is a transcribers service where you be paid to type up audio perhaps form a telephone call or market research group. A job for a speedy accurate typist! A friend of mine sold children’s books, I have provided my storytelling services. Another friend of mine did some evening cleaning.
Lots of people I know offer freelancing versions of jobs they used to do e.g mobile hairdressing, or private tutoring instead of working in a salon and teaching.
I think you need to be flexible, creative, driven and prepared to try something new when you want to stay full time at home with the kids but make a little money too.
Good luck to you!