To The Dis.
First thing to do is start a committee. And as a group deside approx how much you are going to have to raise.
Any fundraisers you do your profit should be nothing less than 50%.
Also the more you can do to make 100% the better off you are. ex. car wash, bake sale, pasta dinners (have the local business donate the items).
What alot of the teams do around here is sell ad space on a laminated business card offering discounts to the advertised business'. Have the cards made up and then each player is responsible for selling them. These are sold for $10 with 100% profit. This is a huge money maker. Everyone is always looking to save money somewhere.
Sell ad space on a banner that you can displayed at all the games to advertise local business. And you can ask a sign company to make the banner. They aren't that expensive. Explain to them that it is a fundraiser and they may give you a discount or better donate the banner. This can be done on shirts as well.
You can do all three of the above and offer different price levels as to which ever one they want to advertise on. I would offer a discount if they were to do an ad on all three.
Again, almost 100% profit
I would try to stay away from all those catalog sales ones. To much work with them.
I'm sure you will get more posters with additional ideas. Just remember the sooner you start fundraising the less stressfull it will be in the end.
Good Luck. If you have any questions about the above, you can PM me.