Here's a quick guide on making desperate cash:
Get one of the 5 hours per week job. At worst, you'll end up padding the meager sum you'll be making from doing odd jobs. At best, you'll get more hours than advertised and maybe even land a steady job. When you're desperate for cash, money is money.
Find out if there are universities nearby. See if they have a science department. Sell yourself to science - Some students need to do experiments with a large pool to draw their data from, and sometimes pay a few bucks to let them do strange (But mostly safe) stuff to you. Don't take any drugs, though. These are university students.
Grab your £60 from the blood donation if you can't find a plasma center around somewhere. £60 is £60.
Sometimes you can even get paid to donate your, uh, 'potential children' at a sperm bank. Never tried it myself, since I don't fancy the idea of having a bunch of kids I don't know about wandering around without me knowing it. Besides: ew. I also have no clue how common these are in Europe. I've never even seen one here in the States.
Start a car wash or lawn mowing business. You can sometimes get £10 - £15 for doing a single lawn or car, and considering that professionals charge about five times more, most people are willing to pay for it. You would probably have to go door to door, though, not to mention have the right equipment.
Bake cookies and go door to door selling them. Eventually you'll run into a kind, elderly woman who'll give you extortionate amounts of cash for a plate of cookies. Once you've found one of those elderly people who pay too much for your cookies, visit them at least once a week.
Sometimes, if you're a minority (And sometimes, even if you're not!) those stupid survey websites will pay somewhere around £0.10 euros per survey. The problem is that you'll be making very little money for your time - But if you do about 8000 surveys, you'll have your trip paid for!
If you're truly desperate, you can get a sign that says, "[Country] promised me [X], but all I got was this stupid cardboard box."
That's all I can think of. Good luck.