Make some pin money doing online surveys, like at Ciao and Brainjuicer.
I'm not sure how I got on their mailing list, or the website adds, (maybe someone else can help?) but I've a few pounds waiting to be redeemed from them after doing a handful or two of quick surveys.
It will rise to 1.40% from June
Show us the prizes you've won recently
Via app. Selected May dates