Not just for letters. Envelopes can be used to hold collections and package gifts. Glue or stitch them into books to provide storage for small or oddly shaped items. The variety is vast – below are some resource links to templates and videos to fold your own.
Links and resources –
- Envelopes and Letter folds
- Envelope and Letter Folding Association
- GHH Fold Index
- Origami Envelope Maths
- Origami Letterfolds (YouTube)
- The Art of Papercraft – Helen Hiebert