Good advice in all previous posts.
Would like to suggest however that, in my experience, the ones to avoid on the first trip are definitely stall turns and spins. (By this I mean, amongst other manouevres, not as stand-alone exercises.)
Unless the "candidate" is obviously having no trouble coping, these are guaranteed to fill the bag, glove, "comfort module", at some stage, right up to shutting down !
Its a good idea to "read" your passenger within the first few minutes and , if any signs of discomfort, as suggested, STOP.
Just as a matter of interest, one mate had a macho stude who continually assured he was fine until, after a short "very quiet period", proceeded to honk so violently he blew the bottom clean out of the bag.
Once upon a time the stude would have had to clean up the aeroplane, including the instrument panel (!).........not this guy !.............. "Its your fault and you're being paid !!!
Rgds, Sleeve.