Here is a great example from Suann, of Simplesong who sent her clients Macaroons as her way of saying thank you (yummy!)
And someone else who agrees with me....(click the link).
This is how I would begin to do this....
Firstly I would wrap up their image disc nicely....and put on of these great stickers on the envelope.
Then I would pop in a thank you card, along with a gift of some kind. Maybe some sweets, or.... I don't know- something nice anyway!
Images found from Paperie Boutique
I also think it's great when Wedding Photographer's send their couples Valentines or Anniversary gifts. So cute!
Would you like to be that type of client? How would you feel if your photographer sent you thank you notes and gifts?