My girls do travel softball and here are the fundraisers we've done over the years:
the one that yields the most profit is a Bingo (we sell tix for $20 and have 20 games...10 Coach purse prizes and 10 Pandora bracelet prizes and for extra $$ folks can play 3 special games for bigger Coach or Pandora prizes). We have 2 a year, sometimes 3 and it really knocks out a lot of our costs. We have one coming up.
Then we do a Super Bowl square thingy which it might be too late for you guys to do.
We have done, and I like because it's easy, a pancake breakfast at Applebees...some Applebees allow you to use their restaurant and their cook who makes all you can eat pancakes and sausages...they only take a small fee per person to cover food cost (sell tix for about $7.50pp and Applebees got like $2.50). You will have to find a link for your area, but here is the one for ours:
http://www.rosegroupdining.com/neighborhood-involvement/flapjack-fundraiser.asp The kids do all the work to serve and clean up...but it's super easy and the kids have fun. Can have a few baskets there to do silent auction as well (we set them up on the bar).
Car wash didn't yield much profit but we've done it (no cost for us, so that's good).
We also will find some sort of prize (a family on the team that has connections to something) like tickets to a game or, around here- AA Co Maryland- a big one is, a bushel of crabs and case of beer...that sort of thing to raffle.
Another one is the 3 pick lottery for a month where you makes up tickets for every 3 pick combo and sell them for $5 each. Each day has a set winnings and that gets listed on the tickets. You really have to sell the tickets out (or most of them) to make a good profit. Someone mentioned this above**