A strange question, I know.
I expect to arrive with a normal-size baggage, containing items that I brought in the flight, but I do not want to take away any more, objects that I'm going to transfer in my main luggage between drop it with WFS for the subsequent delivery, and some stuff that I will carry with me in a much smaller bag waiting in my main suitcase. I do not really want to explain why this is the case because it will distract the attention from the main question – nothing bad happens, I just have a slightly complex route and I do not want to hang out more than I need at any moment.
I then stay with unwanted hand luggage containing some harmless and cheap possessions (nothing unpleasant, not even dirty clothes). I will deliberately use an old slightly broken bag (ripped handle) that I have already replaced and that is currently cluttering my home. If it was a soft bag, I would roll it and put it in a wastebasket, but it's a somewhat rigid wheel bag that does not can not be placed in a normal basket.
What I obviously do not want to do is leave a bag hanging around the airport and trigger a security alert. My best current plan is to casually drop it on a loaded baggage belt, where it can turn in circles until the baggage handlers eventually pick it up. There will be no obvious means of identification, and I will leave a note inside English and Cantonese to say that I do not want more, to avoid wasting any effort to find an owner. Then, they will probably dispose of them by all the means they have for non-identifiable lost objects.
Does anyone have better ideas? Maybe all this is a useless subterfuge and that there is actually a convenient container for bulk garbage hidden in a place where I could throw it away? In or near the baggage claim, ideally.