Just found one on the child sofa right in front of my television chair!
My four musketeers go there (thankfully 2 are upstairs on the sofa and 2 were in my arms coming from upstairs), there was a fleece blanket on it and that thing was right there on the blanket. I folded several times the blanket then I ran with it upstairs and threw it near the door. It was a teenage size spider.
Hopefully that damn thing won't be able to escape (i stepped on it a few times so i may have killed it *crossing fingers*) from that place until my parents come back!