Custom Forms on Individual events

Hi Community,

Does anyone know of any organisations customising forms on an event/production season level? If your organisation does it, how do you do it? We put on a lot of workshops and of course each one would like their own set of questions to be asked during the purchase. 

Our primary purchase path is custom but we do use TNEW on an off-shoot site, so I'm happy to look into either direction. 

Thanks,

Tim