Some months ago I made these as desk trinkets at work: The body tubes are heavy duty toilet paper and paper towel tubes from the industrial bathroom, about 2 mm thick. The fins and nose cones are printer paper and Scotch tape, taped on. The smaller nose cone was colored with a highlighter. (The fins originally got pink highlighter, but they faded.) After staring at them for months and musing over making a flying version, I now have a plan. I'm going to make a complete, flyable rocket out of nothing but office supplies. The only thing that will not come from my own workplace is some white glue; I consider that a legitimate office supply, I just don't know anybody here who has some. I will be using non-office tools, just not materials. The airframe will consist of two of the paper towel rolls. (I've already collected a good few of each size roll in anticipation of some sort of rocketry use.) A third tube will be cut to make two couplers. The nose cone will be printer paper and glue, with one of the couplers for the shoulder. I will make some two layer laminations out of corrugated cardboard, with the corrugations running at right angles. The plywood-like structure is not for strength but rather for stiffness. This will be used for the fins and rings. I'll probably close off the fin leading edges with tape. The MMT will also be printer paper and glue. 24 mm, because this tube is pretty heavy. The engine hook and launch "lug" will be made from paper clips. ("Lug" is in quotes for reasons that will be made clear in due time.) Recovery will be by splitting in half to guarantee tumbling. Perhaps I'll find something in the office to make a streamer out of, but I think it will survive without that. Shock chord holding the halves together will be rubber bands. It will fly naked, to make the material choices plain. Step one is to do the detailed design in RS. I will try to get that done tonight when I get home. Watch this space.