I have a mix of different things. Original source, the lynx ones I like the smell of, a couple of different unscented body washes, and a couple of bars from lush. Plus the odd small ones I've grabbed from hotels over the years.
Also, two different mouthwashes, 3 different toothpastes, various toothbrushes, a few different disposable razors, and a few different moisturisers.
The only thing I don't offer a selection on is hair stuff, no reason they should be washing their hair, so don't bitch about my shampoo and conditioner.
But honestly, I'm going overboard, grab something unscented, and if you like something else, leave it out as an option. Just be prepared to wash it after visits, stray hairs won't go down well.