Is it possible to earn online?

Hi all. It'll be summer soon. I want to go somewhere on holiday to the sea. My husband and I of course put off, but I would like to go with higher amount to nothing does not deny. So I thought, is it possible to earn on the stay online by working few hours a day, so 500 dollars. Can anyone share experience and suggest trusted resources where you can legally earn money. All sorts of pyramid trading and other fraudulent schemes are not interesting to me. Can handle writing text, website content, management of groups in social networks. In short, many things can - looking for opportunities to apply their skills.