A few things you can look at that won't make you lots of money but if you do a few of them, then it'll all add up.
The first is Serpclix - you can earn around £15 a month from them, sometimes closer to £30.
You have to download an extension either on Firefox or on Microsoft Edge and the extension will notify you when there is something available. When there is a search available, you click on the search term and that will take you to google to search it (it automatically copies it so you just need to paste it). You then have to click on the highlighted url and stay on the page for a set amount of time and it will pay you $0.05 or $0.10 for it. Its an easy task to do in the background.
serpclix.com
The other one that I would recommend would be clickworker.
You need to check is multiple times throughout the day, but I often get quick tasks that are really easy and don't take long. You can also do the tests in order to gain access to UHRS where there is more work available to do.
Earn money online with microjobs. As a clickworker you set your own hours and work independently from any computer with an Internet connection.
www.clickworker.com
There's also task apps like roamler, smartspotter and a few others. I don't do them anymore so can't give full advice.