It's very hard to officialise this kind of claim in a subculture that often kicks hard against any form of officialisation, but as far as my research goes nothing even points towards anyone trying to make the smallest zine in the world. So in this case I'll make the claim, even if it may never be proved.
10 leaves (incl. cover)
Alternating paper colour between neon pink and green.
Each page hand printed with DIY eraser stamps.
Double binding - glue and stitching - for strength