We normally need to provide souvenir to MI advisory research agency to give away to passenger who participate in the questionnaire. We have gave away air asia bag for the previous 2 rounds...we may need to explore for other souvenir.
I have attached here some idea for your reference..cost should be around 20-30 baht/pc...maybe bag tag can be good candidate for next round..You may ask help from N'P on this ja :)