The answer to my little game is this little green folk. I found it in a plant in the winter garden and took a few pictures. I went inside the house to show it to my mom but it made a big pee in my hand and then jumped off to the floor, and this is the mark it left :)
End of the story: I tried to grab it although it jumped very high and far, finally got it and released it in a bay tree in the garden (it's a European tree frog).
Have a lovely week!