You could grab a club member out of the crowd to do a kicking challenge or something. Try and drop-kick onto the crossbar or hit a conversion from a certain distance out. Kinda what Sydney FC do at the moment. A bit of a long shot but it's an idea.
I think Ev's given you good advice. Keep it simple. Make footy the focus, we don't need gimmicks like dab cam and stuff like that. Mermaids, junior footy and maybe a kicking challenge would be more then enough.
It's worth keeping in mind too that a large portion of the crowd don't even really give two ****s about half time entertainment. A lot of people are taking a piss, refilling their beers, having a smoke, getting a feed, having a look at merch, generally having a walk around or chatting with their mates.
The match day entertainment isn't the problem. You want to get more people to the game? Here's three things to fix:
• Food prices
• Beer prices
• Parking
Fix these three things and I guarantee it will help.
Keep it simple.