I need to make some small envelopes (pouches) with the size of 1" x 1" and use them to store seeds. The envelopes will have a top lid to seal. It should allow me to print a label (number) in the middle. I am thinking to use Libre Writer to create several such a small envelope across and print them on an 8.5" x 11" (Letter) paper. Once printed, I should be able to cut them accordingly and glue the sides together to form an envelope. Is this possible with LibreOffice?
BTW, if there already exists an envelope template with adjustable size, perhaps that will do, too.