One of the best work-from-home jobs is child care. This job does not require any training and entails looking after children. Other good jobs are writing and editing, bookkeeping, transcription, taking online surveys and selling stuff on eBay.
You could take online surveys. With the website I go on, every survey is worth about $.50 to $5 and take about 3 minutes to do. Then every $30 I earn I can get in the form of a check, mailed to my house.