I loved to penpal friends over covid here are some of the things I would include :)
- a list of current favorites (recipes, movies, tv shows, music, etc.)
- stickers
- collages
- cool magazine cutouts/ small posters
- tea bags
- confetti
- vintage pictures/ postcards
- small flat trinkets like cool business cards or other things that would fit inside the envelope that reminded me of the person I was sending it to