The initiative that got my attention was Warsaw's (I think)Some of them also spoke of initiatives to get fans into the ground, including one club who for one match said to fans 'pay what you want'. I'm not convinced this would work at the Amex (as the club pay for travel costs and it is to a large extent a cash free ticket purchasing process) but if done once a season, perhaps on a child and adult basis, would generate interest, food, drink and shirt revenues, and perhaps ensnare some new fans.
A lower division team has, like us, very cheap season tickets for the juniors.
But what they do is give a couple of pounds cash back when the child is in attendance.
Usual that money still gets spent at the club.