My adult piano students usually want stickers
They don't get them though, because I forget
In fact, I'm quite anti-extrinsic reward systems, but they do have a place with some people.
Okay, now this will sound strange. My CDC neither weighed nor measured me, or made a big deal of the weight I lost, yet in my eyes she was the bestest CDC ever.
Why? Because she learnt very quickly what
I needed. She adapted to suit me.
It was important to me that I wasn't weighed or measured by her. It was also important to me that she didn't go head over heels with each pound I lost, and she sussed me out very quickly.
What I wanted from a CDC was someone who could advise me, someone who would listen if I needed a moan about the diet. Someone who would supply me with the packs, and always have time for me.
I strongly believe that the more support you get in the way of extrisic rewards, the harder it is to keep on track. Your motivation can shift from what you originally set out to achieve.....ie to lose weight for you and only you. It can become 'for the sticker', 'to keep the CDC happy' 'to get that cheer'. The journey can change in very subtle ways without you really realising and make the process appear easier, but end up being on shakey foundations.
Having said that, I do like the fridge magnet idea of Linda's. Not so much as a reward, more as a visual reminder of what you have already achieved for yourself.