When we were there I video taped them saying what they loved. They loved that and we had some really special interactions with this. This isn't all I did but it is some of the interactions. I just told them to say where they are originally from and why they love working at Disney.
Castmembers say what they love
I'm not sure what I'm going to tape this year. But I really want to do it again. Any question you've always wanted to ask? You can either keep it for yourself or let me steal it.
We've also considered making our own Mickey gloves and all wear them and wave at the CMs as we walk in each morning but I'm yet to do that one.
At restaurants I show my love with my pocketbook, a nice tip is the best way of saying thank you.
And on rides if we are having a great time we include them, scream and cheer and have a fantastic time. It can't be fun to run a ride and see people with cranky faces.
Oh, and follow the rules. I break this one sometimes as I'm not good at remembering rules but whenever a CM has to tell me to not take a picture (I never can remember you can't take pictures in security

) I always feel so bad because they have to tell me and explain why. That can't be fun.
Oh, and they LOVE group shots. I like to have more than one CM in my photos. They love that. Who doesn't like getting their picture taken with their friends. And then show it to them. That's always a fun thing to do. And if they try to initiate and interaction with you, interact back. It's always lame to make a joke and have the person you are talking to pretend you don't exist.