I don't know if it'll ever happen, or even if it's legal, but I'm waiting for the first all-star cheer squad to be "sponsored" by a large company and have the company logo prominently displayed on the team's uniform when they take the mat. Like an MLS or EPL soccer jersey.
Our gym's fundraising isn't really out of the box, but it's pretty effective. Besides the annual competition we host, we do a variety of traditional paper fundraisers (everything from flowers to donuts) and as mentioned above, offer to work arena/stadium concessions.