In order to earn some 'pocket money' I've been undertaking paid experiments at my local University for their psychology students. When I first started doing this I simply wanted to make some easy cash-in-hand, but I have to say that there's far more to be gained than a few extra quid in your purse; you meet a truly eclectic mixture of oddballs and you get to do some bizarre (and often fascinating) things.
So far I've watched and reviewed video clips, worn a swimming cap with wires sticking out to track my brain-waves, been involved in the initial stages of creating a brand new video game, tried to count coloured spots on a screen whilst wearing 3D glasses, and much more.
Some tasks have been a little tedious, admittedly, but most have been enjoyable and a few have been absolutely hilarious. My reward for being introduced to these 'mad young scientists', and being part of their weird and wonderful experiments; along with a very favourable exchange rate; is that I now have a nice big wad of euros to take to Lanzarote. Carry On Professor...!