What are some ideas for working from home?

I'm a SAHM (and will be for at least 2 more years) but would like to supplement our income somehow. Besides in home daycare, I cannot think of any ideas for ways to make some extra money. Any ideas? Many of the "work from home" ads I have seen are rip-offs, so I am wary of those... I'd love to hear some legit ideas if you have them. Thank you :-)