I'll start by suggesting that as our two remaining home games are against ex-League opposition, they're likely to bring as many away fans to equal the number of home fans. So perhaps, especially for the Kidderminster game, if an adult brings along an U16 and pays full price for both they're either given a voucher that entitles them to 'Kids for Quid' for the Exeter game.
An adult brings two or more kids (U16) to the games and only pays full price for one, while the others can get in for just a pound. I'm sure the potential in Clubhouse and Burger bar takings will make up the difference. This should hopefully attract the younger fans to bring a mate or two with them and if they like what they see then they could well return next season!
Alternatively, if you're stuck for ideas, take a look at the Slough forum!