Lots or replies on here made me laugh inside, we are all very different in the way we work, which is why we all have different clients and regulars, which is good.
I'm another person who has the towels in my cupboard and hand them one when taking them into the bathroom, point at showergels, generally Sanax/Simple and a Radox if they fancy something scented, I then have deoderants and sprays and mouth wash if they wish to use them.
I have a power shower that I turn on for them, as the first bit is always really cold. I tell them if they want to change them temperature to do it slowly as I have my shower set on high pressure when you turn the dial it heats or gets cold really quickly.
I've brought some cheap aromatherapy bubble bath from Morrisons when it was on offer at 50p (brought 10) which was lovely and I refilled my Molton brown bottles with it, smelled just the same and nobody noticed. I love saving the pennies lol