Set 6 is awesome!
I love your clips and they are among the best out there. If I were to make any suggestions, it would be to make it so Meka cannot untie or ungag herself and that she is sat in a position where she has to watch what you're doing (at least until you blindfold her to increase the tension... 😀 ).
Set 6 does this as she wouldn't be able to get out of that and has to sit forward (the other position I thought of was to use a collar fastened to the front of the chair and to handcuff hands behind back).
Should you guys ever have an evening with nothing to do, please feel free to make a video of this! ;-)