100 Pen Pal Theme Ideas For Your Next Aesthetic Snail Mail Letter

Breaking the barrier into the “artsy” pen pal world can be an exciting move! There are so many talented people creating wonderful snail mail art, envelope art, and cute little goodies. But once in awhile, we can experience some art block. Nothing looks good, everything feels wrong, and the design you’re trying to go for just isn’t looking the way you want it to.

Sometimes, you need a little inspiration to get the creativity flowing, and the best way to do it is with a reference point. This huuuge list of pen pal ideas is here to inspire you for your next snail mail letter. Maybe you don’t want to think too hard and just use one of the pen pal themes below, or maybe you feel inspired to create some envelope art loosely based around the themes. Whatever it may be, I hope that these pen pal design themes help you start crafting your next outgoing snail mail!

100 Pen Pal Ideas to Try

The mail themes in this post are split up into broad categories, with specific ideas listed out. If you want a visual reference, I suggest typing these pen pal ideas into Pinterest and seeing what pops up, or browsing other pen pal Instagram accounts for some inspiration.

1. Fruit Inspired Pen Pal Letters

Who doesn’t love fruit?? A fruit themed letter can be a cute way to highlight your favorite fruit or to have a consistent motif throughout your snail mail letter. The cute peach themed letter below incorporates the theme so well!

  1. Strawberry
  2. Coconut
  3. Dragonfruit
  4. Lychee
  5. Pineapple
  6. Lemons
  7. Mango
  8. Kiwi
  9. Peach
  10. Avocado

2. Animal Themed Snail Mail Letters

It doesn’t matter if you’re a dog or cat lover – animals are always a great theme to start with! Keep things simple with one animal as the main focus or have fun with it and use small images all throughout your happy mail. The letter below looks so beautiful with the whale as the center piece! (But am I biased because it was addressed to me? …maybe hehe)

  1. Dogs (of course!)
  2. Cats (duh!)
  3. Elephants
  4. Turtles
  5. Giraffes
  6. Bunny
  7. Frogs
  8. Butterflies
  9. Pigs
  10. Horses
  11. Foxes
  12. Snails
  13. Pandas
  14. Lions
  15. Camels

(I also love animals so here are some bonus unique ideas: axolotls, quokkas, or the dumbo octopus!)

3. Nature Inspired Snail Mail Art

Who doesn’t love nature?? This theme is sure to bring you a little bit of calm and peace when you’re crafting your pen pal letter. Whether you’re inspired by the mountains, forests, or oceans, your pen pal will definitely love it. The subtle blue flowers sprinkled throughout the goodies and happy mail look beautiful all togther!

  1. Beach/Oceans
  2. Deserts
  3. Jungles
  4. Trees
  5. Arctic
  6. Forests
  7. Tropical Island
  8. National Parks
  9. Mountains
  10. Countryside

[Related: 100 Fun & Interesting Questions to Get to Know Your Pen Pal]

4. Snack Related Themes For Pen Pal Letters

Foodies unite! Bond over your mutual love for snacks or take it one step further with a snack themed letter. You can use your favorite snack as inspiration or showcase your culture’s most popular goodies. Look how cute that giant pink gummy bear is!!

  1. Bread
  2. Coffee/tea
  3. Dim Sum
  4. Candy Bars
  5. Boba/Bubble Tea
  6. Chocolate
  7. Gummy Bears
  8. French Pastries (i.e. croissants, cakes, macarons, etc.)
  9. Hot Cheetos or Takis
  10. Animal Crackers

5. Pop Culture Inspired Snail Mail Ideas

If you’re part of a fandom, showcase that proudly and connect with others! Pop culture is so vast that you’ll never run out of themes to try and craft your letters with. Look how cute the Disney theme can be! (I know – another one addressed to me…but my pen pal friends are just so talented.)

  1. Kpop Groups
  2. Disney
  3. Harry Potter
  4. Avengers
  5. Animes
  6. Pokemon
  7. Zelda
  8. Avatar: The Last Airbender
  9. Star Wars
  10. Lord of the Rings
  11. Doctor Who
  12. Super Natural
  13. Sherlock
  14. Game of Thrones
  15. X-Men

[Related: 25+ Ideas on Writing the First Letter to A New Pen Pal]

6. Flower/Plant Pen Pal Themes

Plants and flowers not only brighten up the home but can also brighten up your day. Use these cute little plants as inspiration for your next happy mail. The succulents and cactus work so well together in the letter below!

  1. Lillies
  2. Roses
  3. Tulips
  4. Cactus
  5. House Plants (i.e. monstera, pothos, snake plants)
  6. Palm trees
  7. Lavender
  8. Daisies
  9. Sunflowers
  10. Poppies
  11. Succulents
  12. Vines/Trailing Plants
  13. Cat Tails
  14. Hydrangeas
  15. Ferns

7. Mystical Themed Envelope Art/Snail Mail Art

Channel your inner mysticism and craft a magical letter for your pen pal. Whether it’s a mystical creature you love or the big, wide unknown of space, your pen pal is sure to love whatever design you come up with. Look how amazing that Saturn turned out!

  1. Space
  2. Galaxy
  3. Vampires
  4. Crystals
  5. Astrological Signs
  6. Spiritual
  7. Fairies
  8. Mermaid
  9. Unicorn
  10. Dragons

8. Miscellaneous Pen Pal Ideas & Themes to Try

These themes are more like overarching ideas. Each category can be interpreted and further broken down into something more. Browse through and see which pen pal theme sparks your interest and encourages you to create. Seriously – how gorgeous is that vintagey-travel inspired theme?

  1. Vintage
  2. Minimal
  3. Kawaii
  4. Travel
  5. Scenery
  6. Fine Arts
  7. Camping/Outdoors
  8. Dinosaurs
  9. Decades (i.e. 80’s, 90’s)
  10. Holidays (i.e. Christmas, Easter, Halloween)
  11. Stationery
  12. Photography
  13. Cottage/Farm Cozy Vibes
  14. Monsters
  15. Seasons

I hope these 100 pen pal theme ideas helped create a jumping point for your next happy mail design! Remember to gather inspiration from others, but don’t plagiarize/imitate. If you do, always credit the person you were inspired by.

If you’re new to pen palling, I have a post about where to find new pen pals and what to include in the first letter. I sincerely hoped this has helped!

x Leslie

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100 pen pal themes and ideas to try for your next aesthetic snail mail - postie club