There are quite a few work at home jobs available, however assembly types are not very common. On-line writing assignments tend to be more of a commonplace should you wish to work from home.
No. Most of what you see advertised online or in newspapers merely attempts to have you sell books to other people about, get ready for this, working from home.
There are only a few websites I know of that have legitimate work. None of which are assemble at home. If the website is asking YOU for money, it's a scam.
Try ratracerebellion, livework and liveops. Good luck!