Wireless adapter (I'm not dealing with Ethernet or link sys or cables or stuff.)
I would advise against that, but it's my opinion. I have a 12 month old son and a wireless router(have a Wii, 360, xbox 1, and 2 PC's that go into the router). But the 360 is the only wired connection. The wireless adapter is freaking ridiculous($100USD, wtf?) in price, I bought the router and two wireless adapter cards for the PC's and only cost me roughly $100. I wanted my 360 wireless as my son tries to eat the wire and pull the 360 off the entertainment center, but yea.. now I just ran the wire along the top of the wall downstairs to save my $100.
Also you can't get a 360 without Oblivion man! One of the first games I bought with mine a few years ago, and I still go back and play it from time to time(way over 200 hours clocked in altogether).