edit: a few things i could use that i could think of: candles, any baked good, meat, fish, intestines, any metal, bottles but feel free to make offers. i have about 145 L.
well apparently you can't put vinegar in a bucket, otherwise i'd give you a bucketful. i have a barrel with i think ~ 17 L and another one with ~25 L and i have bottles. so for 10 bread i'd say probably 2 bottles. if you can bring your own bottles i'll fill them, maybe 1 bread per bottle.