If you look hard enough you can always find ways to earn money online. Don't get me wrong, sometimes you have to put the time in to get very little in return. But sometimes it seems like taking candy from a baby (albeit still a small candy...).
I don't tend to get excited about the world of surveys. They seem to take forever and you really don't get a lot in return very often. The one survey site I do like to have plenty of time for, however, is Prolific Academic. I signed up to be a survey participant back in December and I've been fortunate enough to get signed up for quite a few surveys.
The surveys themselves tend to be academic in nature (hence the name of the site) created by universities all over the world, so some of them are actually quite interesting. Face perception, the relationship between the multiple meanings of ambiguous words, apparel shopping, your willingness to buy a solar charger were all among them.
From experience, they tend to take anywhere from a few minutes all the way up to 30 minutes to complete. They also pay from about $1 a time up to about $6, if you are really lucky in being part of the right demographic -- not a bad return for a survey. The minimum checkout level is around $7.50 (essentially it's denominated in pound sterling and so has a checkout at GBP5.00) and gets paid through PayPal. It just seems like a win-win to me.
So take a look -- there are far worse ways to earn a few dollars online than Prolific Academic.