Has anyone tried a loyalty program to incentivize involvement?
Our school has a mobile app that can do a program like "10 hours of PTC volunteering and get half-off a ticket to our spring fundraiser". Parents would get their phone 'stamped' by a PTC member with a special code to confirm accrual of hours...like one stamp for 1 hour. Once their punch card is completed, the PTC person would give them their incentive and clear the card so they can start again.

We CAN do it, but we aren't sure about it.
I just wondered if anyone has tried a similar system and has feedback? Or if you haven't done something like this, what do you think?