At first, sorry if this question has been asked before (and eventually answered), but it started to bother me just now.
The situation is that the only place I can currently plug my raspberry in is in one corner of the room, where the TV is. Now, the router from whom I could 'take' the internet from and supply it to the PI is in the another corner...
The basic problem is that there's no way I can drag ethernet cable through the whole room. I haven't seen that long cables.
What can I eventually do?

Without internet connection I am unable to install essential programs and so on..