Website Letterfu offers designs and instructions for letter-writing and sending without envelopes, cutting, or glue. All you need to send one is a printer, an A4 or Letter-sized sheet of paper and a ...

Fold one corner of an A4 piece of paper back on itself to make a triangle. Use scissors to cut off the excess paper. Don't forget to grab a grown-up! With the longest side at the bottom, fold the top ...