What are the quick surveys one can do to earn money

[Builder Samuel]

Usually surveys are available in a very short amount. And people are invited a few times in a month. But you can generate extra cash for your pocket money. Here are some website where you can do surveys.
1:Swag Bucks
2: Survey Junkie
3: Life Points
4: Branded Surveys
5:My Points
6: Opinion Outpost
7:Toluna
8:One Opinion

You can earn some extra cash from surveys and all above sites are legit.