Vintage gardening and a few choice home items is another aspect of my market stall. I have great fun sourcing bygones from auction houses in East Anglia - old terracotta pots, gardening tools, old gardening books (love them!), old baskets and other bits and pieces, including ceramics with a tenuous link to horticulture like a floral patterned plates, or whatever. I've just got some lovely old wooden chitting trays from Norfolk which will not only make a good display prop but should also be tempting to passing trade, gardeners or not.
If the opportunity arises, which it quite often does, I like to have a good chat with customers about gardening and plants and advice is freely dished out. If you happen to be in Cambridge on a Wednesday, pop to the market and say hello!