Manipulation 1
During our distribution of our hand made soap, we placed a couple of soap on the benches of the bus station without anyone noticing us.
Two of us sat next to them and started a conversation about how amazed we were to find free soaps in such an unexpected place like the bus station. After we left, we then took a peek around the corner and noticed them holding the soap bars and reading the postcards. The presence of the soap on the bench did not catch their attention until we talked about it. We actually had them pocketing them.
Manipulation 2
I noticed that every time I yawn next to my fiancé, he follows on and yawns. Try this little tactic: Take a big yawn, cover your mouth out of courtesy, and watch and see how many people yawn.