A friend of mine approached me on the subject of storing his pre-rolled "cigarettes" during a day out.

I made two options varying in size and capacity of the conical tubes. The seven round version has a diameter of 14mm at the top and 7mm at the bottom and the three round version has a diameter of 18mm at the top and 9mm at the bottom. They are both 114mm deep, which should fit most papers i have come across.

The overall size of the container is comparable to a 250ml red bull can. Exact dimensions are 52x52x120mm, which fits almost anywhere from pockets to most can holders or backpack compartments and even smaller slings.