I def have been saving my stems as well for a while I have them in a really coool jar that looks like it has Alexander the great on it, a corked vase. I plan to soak them in vodka at some point. I did it once with like 10 oz of stems I'd saved up and collected over 3 months living in the dorms. I let it sit in the darkness in a sock over a month and it came out very nice and didn't taste too terrible either.