A Tinner's quilt is similar to a Round Robin, but rather than adding a border/layer quilt, you make individual blocks using the colours provided, adding or subtracting a colour each time the "TIN" of material moves from person to person. The supplier of the original fabric doesn't see the results until all the block have been made.
I have to admit, I too much of a control freak to enjoy something like that!! LOL
It did result in an interesting quilt. My friend's original fabric choices had been the deep gold and the blue/green (used in the border as well.)