Shot a roll of T-Max 100 in a Holga TLR at the Lomo workshop, and then we processed them in Caffenol-C! Only got 2 1/2 good shots from my roll, due to a combination of underexposure (it was a grey, rainy day, though I did use the flash), and slightly underprocessing — we're guessing it could have stood another minute or two. But still, exciting! Instant coffee, Oxyclean and Vitamin C powder!
This is actually two photos, but I must have cut the negative strangely. There were a few other photos visible on the negs (barely), but were even darker than these.