Vivitar made some great 35mm plastic cameras with decent lenses. Aside from the previously mentioned Vivitar Wide and Slim, there is also the Vivitar IC101 panorama, and the Vivitar Eco 35. I've seen some nice images taken with these cameras.
Another good plastic 35mm camera is the Argus 520 with a 28mm lens.
Do a web search for images from these cameras and you will see what can be done.
I have seen all these cameras for as low as $2 here and there.
I just realized the "dollar store" term probably gets lost in translation from America to Greece. Sorry!
I figured whatever the Greek equivalent to a one dollar store---all items are $1 or less---would carry a cheap plastic camera. If not, you don't need to spend a lot of money. More than likely, you'll pay much more than what these cameras are worth on eBay when you combine their "cool factor" and shipping to Greece. Look at local thrift stores and the like. There's no such thing as a "toy camera," just cheap cameras with poor lenses, fixed focus, fixed exposure, etc.
What's a good price for a Rollei 35?
Not a toy camera of course, but nevertheless...
Real photographs, created in camera, 100% organic,
no digital additives and shit