Hm... I could really need some money, too, but I wouldn't do any job. University also keeps me kinda busy.
My only experiences up to now were once working two weeks in my town's zoo and working 12 weeks in a plant nursery. Didn't get money for either of these, though, since the first I had to do as part of 10th grade in school and the other I had to do for university to prove "practical knowledge".
The zoo thing actually was kinda fun, I guess, although it mostly involved cleaning up behind the animals - llama feces are still the worst thing I've ever smelled. Since there was way too much personnel - two zoo keepers, one trainee and three guys from school (me included) - I was finished for the day like four hours earlier than if I had had school, though. And that I definitely appreciated.
The plant nursery thing was similar in that it mostly consisted of one thing - plucking weeds. The first thing I was told when I started out was - "you see that lawn?" "You mean that congregation of all kinds of plants that reachs up to my chest?" "Yeah, get rid of it, we want to plant something new there" So I spent the first week pulling out every single plant by hand. Then I had to dig it over. Turned out that about 10 cm below the ground there was cobblestone. So I had to dig that up. I also found handfulls of plastic needles and remains of asbestos plates. At another site of the plant nursery I also found lots of chicken bones and even a duck beak in the ground.
I also quickly learned to only clean up my own tools. Another volunteer there once decided to empty a bucket that had been standing around for some days. It was full of weeds - or so it seemed. Turned out under those weeds had been a dead chicken. And I guess you can somewhat imagine how that looked after all those days in the sun... or rather, how much of it had returned to life again.