If you are completing surveys on sites such as mTurk or Prolific - a lot of those are academic surveys. During the break periods (such as summer and holidays) there will typically be less work available. It will also depend on the time of day to an extent. You are more likely to find work in the morning than in the evening. Also, take note that survey work on the better sites such as mTurk and Prolific goes quickly. You often will only have a few minutes to accept the work - so you need to use a watcher of some sorts to catch the surveys in time. Also, make sure to fill out any profile questions that the site may ask for. Prolific has a fairly extensive "about you" section that will help filter out the surveys and grant you access to additional surveys.
Hop onto the iPoll survey site, and you’ll see a cheerful cartoon of a man walking his dog while thinking about products. Their boast is that thanks to its web, iPhone and Android platforms, you can complete surveys at home, in the office, at the beach, or on a walk. I put that to the test. This is one of the easiest to use survey sites on a mobile phone, and that’s because the surveys offered are sharp and quick, and the site itself is easy to navigate and use, whatever platform you’re using it on. This is a good choice for people whose online time is mainly spent on their cell phone.
Playing games online: if you like playing games, why not turn the hobby into a moneymaking activity? There are tons of websites out there that reward their loyal fan base with points when the complete a game or play for a certain amount of time. These points can then be exchanged for real money. Sites are able to do this by sharing the profit they make from ads as an incentive for users to visit the site.