I don't watch the show either so I'm no help.. but I made some super cute burlap wreaths you could do one of those in team colors OR maybe just a random colors w/ your sils last name (you can buy just one wooden letter at hobbly lobby for like $2). Here is the burlap wreath I made BAD pic sorry. I put burlap, fabric, and tulle.
What about doing something like this for some of them? I've mad several of these so far for xmas. http://pinterest.com/pin/169448004699448945/
Heat therapy sacks w/ a little poem.. super cute and cheap! I bought a bag of rice for like $3 and some lavendar for like $2 and you can make like 4 of the sacks w/ the rice!
For your sister you could do a camera strap cover? http://pinterest.com/pin/193936327673268561/
for one sister you could make a http://pinterest.com/pin/169448004699408250/
fabric covered magnetic board for her kitchen or office... cover a cookie sheet w/ fabric.. so cute!
Umm who else do you need ideas for?
Truck driver brother.. what about one of these except smaller for his truck w/ pics of his family on it? http://pinterest.com/pin/177470041535590294/