There's one by Luisa Canovi, made of five modules from A5 paper http://www.giladorigami.com/origami-database/Icosahedron%20Luisa%20Canovi
a long time ago I used it to make a giant d20: https://enricap.deviantart.com/art/oversized-d20-5092494 https://enricap.deviantart.com/art/origami-dice-set-6966057 but it's not very stable, it works well for smaller polyhedra but the icosahedron falls apart easily. However it's pretty easy to tape in from the inside, if you are willing to cheat ;) By looking for it, I found this page where you can download the handouts from a course Luisa held http://officine.fabriano.com/origami-le-dispense-di-luisa-canovi/ (in Italian) It includes a module by Pietro Macchi which can be used to make an icosahedron, each face is made by two halves. I haven't tried it myself and I'm afraid it's going to have the same problem: good with fewer units but not so much with a lot of them all the best, enui
