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!
I'm not certain why this pic came out so well when others didn't — might have just been a moment of slightly brighter light on an otherwise drab day.