I tend to take the shampoo and conditioner, as it is a great size for on the bike
We owned a Hotel/Motel for 8 years, people used to take everything....Towels (of all types), bed lamps, pillows, bedding, had one customer who took the table and chairs....
then we had the ones who would mash all the soap together and plug the sink up with it, there are other storys, but none of them are particualarly nice....
and for reference, we used to stock the Mocona coffee/Bushells Tea in our rooms