I think they should have punch cards...pay for 6 sessions and the 7th one is free. Or better yet, they pay for 6 sessions and I pay for the 7th...after all, I'm the one doing the work!

Art made by T

Books read or recommended by T

How about a shirt that says "If found, please return to (name and address of T) "

Voicemail recordings from T (a subscription service you could sign up for):
~Hi, it's your T. I was just calling to see how your day went.
~Hey! This is your T. You are doing a great job, keep it up!
~Hello, it's your T. I can't wait for our next session!
~Hi! Your T here. You can call me anytime you need to talk. I'm here for you.

Field trips you could sign up for:
~A camping weekend - just you and T
~T's night out...cheers!
~A day of shopping with T
~Movie night with T

Other services:
~T would tell "mom/dad/ex/etc." off while you stood by and watched.
~T would tell "mom/dad/ex/etc." you don't have issues, they do.
~The traveling T - sessions at home with T.
~The traveling T - T would go with you to that stressful/dreaded/anxiety producing event. On the way there T would prep you for the event. On the way home you and T would process what just happened.