We completely finished our basement ourselves, my husband and I with six kids. We had to build two new bedrooms in the basement, so we lost the only two windows in the main areas. One side of the basement was turned into a playroom and the other side we turned into this TV/Game Room.
We are big Baltimore fans so I decided to do Ravens and Orioles Colors so that my husband finally had somewhere to put up all his memorabilia. ;)
I drew up this paint design in photoshop, tweaking it until everyone agreed.
We have a lot of little league hats so I hung them up as a border for the room.
And we put up a couple of shelves for all of our trophies.