We find cylindrical shapes everywhere . Even the faber castle colour pencil boxes are cylinders . Gas cylinders we have at home , oxygen cylinders in hospitals , many cosmetic boxes etc

I think I have another answer too, I mean I would like to add some. So it might be rice, sorghum, coffee, corn ,ragi, and some spices like pepper, numeg etc

Not sure but I think it could also be rice, rubber, jowar, coffee and corn